We develop software and services that are used by hosting providers to provide security services to their clients.

Most of our software is written in C++ and GoLang, but it needs to be integrated with the control panels used by hosting providers.

These control panels are in most cases written in PHP, so we are looking for the ability to develop panel extensions and plugins, implement a native user interface for control panels, patch and extend opensource software like Wordpress, and willingness to learn new technologies as well.

Our Engineers have wide responsibilities over the whole development lifecycle so knowledge of tools such as Git, Docker, Regular expressions, XML, SQL, HTML, CSS and JavaScript will become handy.

We are looking for engineers who can solve problems together, think about big problems such as scalability and availability and sometimes go against the current to also challenge the common decision.

Understanding Networking and Web Security will greatly help you succeed. In addition to technical expertise, we value taking ownership beyond the obvious, your motivation to learn new things you don’t yet master, ability to make decisions together with your team and willingness to collaborate with different BotGuard teams.

Key Responsibilities:

- You will develop our integration modules, extensions and plugins for hosting panels such as cPanel, Plesk, and DirectAdmin.

- You will develop our plugins for CMS such as Wordpress.

- You will design and implement user interfaces with HTML, CSS and some JavaScript.

- You will help our clients extend their custom client portals written in PHP.

- You will implement event handlers, small applications running in the background in our cluster.

Essential Skills & Requirements:

Basic Requirements

- 4+ years of professional PHP software development experience with a track record of long-term projects

- Complete understanding of how the WWW works

- Experience with web security

- Working experience in hosting industry is a plus

- Working experience with C++ or Golang is a big plus

What We Expect From Our Co-workers

- Curiosity, enthusiasm and strong desire to learn and improve.

- Time management and asynchronous communication skills relevant for a remote-first engineering organization.

Our tech-stack

- C++

- Golang

- PHP

- RabbitMQ

- PostgreSQL

- Clickhouse

- Kubernetes

- Gitlab CI/CD

We are striving to create a erse and inclusive environment. We encourage all applicants to apply for our roles. We value and actively seek erse talent!

BotGuard is a European company established in 2019 and headquartered in Tallinn, Estonia. We operate globally, with clients and partners in more than 30 countries around the world. Our mission is to develop easy-to-implement, state-of-the-art tools to protect companies from modern-day web threats. If you are passionate about cybersecurity, fascinated by solving complex problems, and thrive in an environment where innovation and collaboration drive everything, we want to hear from you.

**

We are looking for a Lead Developer to join our team, focused on building cutting-edge Networking and Web Security services. This is an opportunity for someone who is not only a highly skilled developer but also deeply interested in cybersecurity and excited about protecting websites from modern threats.

Our engineers have wide responsibilities across the entire development lifecycle. You will need to be comfortable developing production-level services in C++, patching and extending open-source software like Nginx or Apache, and working with various programming languages and tools. We highly value curiosity, a collaborative mindset, and the ability to tackle big challenges such as scalability and availability.

This role reports directly to the CTO.

Tasks

**What You Will Be Doing

• Implementing new functions in our detection engine written in C++.
• Developing integration modules for web servers like Nginx and Apache, and patching open-source libraries and tools.
• Designing and developing new networking and web security products.
• Occasionally contributing to web development projects, as our website engine is partially powered by C++.

**

• Wasting time on fixing extensive technical debt. We’re focused on building new features and minimizing technical overhead.

Requirements

• 10+ years of professional C/C++ software development experience with a proven track record of delivering long-term projects across multiple companies.
• Expertise in low-level and systems/network programming.
• Solid experience with web security and protecting websites from threats.
• Proficiency with SQL and knowledge of Golang.
• Familiarity with PHP/XML/HTML/CSS.
• Knowledge of erse programming languages to handle various challenges in website protection.
• Strong interpersonal skills with the ability to collaborate effectively with developers at different levels.
• Passion for cybersecurity and a genuine interest in solving complex problems to protect websites.
• Time management and asynchronous communication skills suitable for a remote-first organization.

**

• A strong sense of curiosity and enthusiasm for learning and improving.
• High motivation to work on web security problems beyond monetary incentives.
• The ability to showcase your work through an active GitHub profile or other demonstrable code examples. This is a must-have requirement as we will evaluate your code instead of conducting a technical assessment.

**

• C++
• Golang
• PHP
• RabbitMQ
• PostgreSQL
• Clickhouse
• Kubernetes
• GitLab CI/CD

Benefits

**Why Join Us?

At BotGuard, you’ll have the opportunity to work on interesting systems and contribute to the rapidly evolving field of cybersecurity. If you love problem-solving, are motivated by the impact of your work, and enjoy collaborating with a dynamic team, this is the role for you. You’ll be joining a global team of professionals passionate about protecting companies from online threats.

If this sounds like the right role for you, please apply with your CV and links to your GitHub profile or other relevant examples of your work. We can’t wait to see what you’ve built!

We are striving to create a erse and inclusive environment. We encourage all applicants to apply for our roles. We value and actively seek erse talent!

Time zones: EST (UTC -5), CST (UTC -6), MST (UTC -7), PST (UTC -8), AKST (UTC -9), HST (UTC -10)

**Who We Are

We're a scrappy, ambitious startup on a mission to empower the next generation of thinkers and writers through cutting-edge generative AI. We don't just build; we innovate, we experiment, and we have fun doing it. We're big on using open-source tech and contributing back when it makes sense. If you're looking to join a team that knows when to work  and when to sweat the details, we're your people.

**Who You Are

You're a tech adventurer with at least 5 years of experience who can write killer code, crack a joke, and doesn't break into a cold sweat when someone says "git rebase." You know when to move fast, when to slow down, and - if not - you're willing to learn the difference. If you find generative AI coding assistants amusingly dumb in the wrong hands but jaw-droppingly powerful in the right ones—come on in.

**What You Bring to the Table

• Languages: Proficiency in Ruby/Ruby on Rails is essential. Bonus points if you can tango with JavaScript/TS, Python, Go, Rust, or Zig.
• Web App Mastery: You get the web stack: from HTTP/TCP to Websockets, HTML, HTMX, and enough CSS to not break things.
• ORM Savvy: You can use one, but you're happier slinging SQL yourself.
• UI/UX Sense: You appreciate good design, even if your idea of a palette is "light mode or dark mode?"
• Git Ninja: You know your way around git rebase and git merge without needing a counselor.
• Fast Learner: You're excited to play with shiny new tech and can get shit done without needing a babysitter.
• Team Player: You'll work closely with our experienced CTO, soaking up knowledge and contributing your own wizardry.

**Bonus Points if You

• Have dabbled with LLMs, training models, or Agentic workflows
• Understand that "scrappy" isn't just a dog—it's a way of life
• Think contributing to open source isn't just cool; it's the right thing to do

**What You'll Be Doing

• Collaborating with the CTO to build, optimize, and scale core products
• Writing robust, maintainable code across our stack
• Engaging in building and fine-tuning workflows that may involve generative AI pipelines
• Innovating within our open-source-first ecosystem and making meaningful contributions back
• Balancing the act of moving fast vs. being careful (sometimes on the same day)

**Why You'll Love Working With Us

• Ground Floor Vibes: Early-stage startup with room to grow and learn
• Flexibility: Work where you're most productive
• A Fun Bunch: We mean business but aren't afraid to crack a joke
• Tech Playground: We don't just use the latest tech; we experiment and build it

**Ready to Join?

Shoot us your resume, GitHub link, or whatever you think shows off your skills. If you've got a portfolio of side projects or an open-source contribution you're proud of, show it off!

We're excited to build with you. No egos, no nonsense—just great code, hard work, and some fun along the way.

About the Role

We’re seeking an experienced Frontend Engineer who is passionate about building the future of decentralized finance (DeFi) and Web3. In this role, you will be instrumental in developing innovative solutions that blend public goods funding mechanisms with integrated social and financial functionalities, creating a new paradigm for on-chain social interaction. The ideal candidate will combine technical excellence with strong values alignment and a genuine interest in advancing decentralized technologies.

Core Responsibilities

• Architect and implement scalable, responsive frontend systems using React and TypeScript
• Build high-performance user interfaces that integrate seamlessly with Web3 technologies
• Optimize web performance and ensure cross-browser compatibility
• Collaborate with design and product teams to shape product vision and roadmap
• Contribute to technical decisions and long-term architectural strategies
• Ensure high code quality through testing and documentation

Required Qualifications

• 5+ years of frontend development experience
• Deep expertise in React, TypeScript, and modern JavaScript
• Strong proficiency with Web3 libraries (Wagmi/Viem)
• Experience with GraphQL and modern frontend architectures
• Demonstrated ability to optimize frontend performance
• Strong focus on UI/UX and attention to detail
• Experience with modern development workflows and CI/CD practices

Values & Attributes We’re Looking For

• Deep alignment with Web3 principles and decentralized technology
• Passionate about the future of DeFi and its potential positive impact
• Strong problem-solving abilities with a proactive, ownership-driven mindset
• Comfortable working in a remote-friendly, fast-paced, iterative environment
• Proven ability to balance pragmatic solutions with innovation
• Adaptability and willingness to e into new challenges and unfamiliar technologies.
• The time overlap for the team is 8 AM - 12 PM EST (2 PM - 6 PM CET)

Nice-to-Have Experience

• Familiarity with the Safe ecosystem and Zodiac
• Previous work on large-scale Web3 projects
• Experience with DeFi protocols or DAOs
• Contributions to open-source projects
• Understanding of blockchain fundamentals
• Backend experience with GraphQL and Node.js

What We Offer

• Opportunity to shape the future of decentralized finance
• Remote-friendly work environment
• Flexible working arrangements
• Competitive compensation package including tokens
• Regular team events and learning opportunities
• Access to cutting-edge tools and technologies

We believe in building technology that empowers users while maintaining the highest standards of security and reliability. If you share our vision for a more decentralized future and have the technical skills to help build it, we’d love to hear from you.

About the Role

We’re seeking an experienced Full-Stack Engineer who is passionate about building the future of decentralized finance (DeFi) and Web3. In this role, you will be instrumental in developing innovative solutions that blend public goods funding mechanisms with integrated social and financial functionalities, creating a new paradigm for on-chain social interaction. The ideal candidate will combine technical excellence with strong values alignment and a genuine interest in advancing decentralized technologies.

Core Responsibilities

• Design, build, and maintain scalable front-end and back-end systems that meet performance and reliability goals.
• Seamlessly integrate blockchain technologies into our applications, focusing on interoperability and user experience.
• Collaborate with a cross-functional distributed team to iterate quickly and deliver value to users
• Build and maintain scalable Web3 integrations, with particular focus on DeFi protocols and infrastructure
• Architect and optimize database solutions that bridge traditional and blockchain data systems
• Contribute to technical decision-making that balances innovation with practical implementation
• Proactively identify bottlenecks, optimize code, and scale systems for high performance in a rapidly evolving environment.
• Help providing technical guidance, driving best practices for clean, maintainable, and efficient code.

Required Qualifications

• 5+ years of full-stack engineering experience
• Strong proficiency in TypeScript, React, Node.js, GraphQL, SQL databases
• Demonstrated experience with blockchain technologies, including EVM-compatible chains, smart contracts, and web3 libraries
• Deep understanding of DeFi protocols and decentralized systems
• Track record of shipping and maintaining production applications
• Experience with modern development workflows and CI/CD practices

Values & Attributes We’re Looking For

• Deep alignment with Web3 principles and decentralized technology
• Passionate about the future of DeFi and its potential positive impact
• Strong problem-solving abilities with a proactive, ownership-driven mindset
• Comfortable working in a remote-friendly, fast-paced, iterative environment
• Proven ability to balance pragmatic solutions with innovation
• Adaptability and willingness to e into new challenges and unfamiliar technologies.
• The time overlap for the team is 8 AM - 12 PM EST (2 PM - 6 PM CET)

Nice-to-Have Experience

• Experience with the Safe ecosystem and tools like Zodiac.
• Knowledge of Solidity or Vyper, with experience building smart contracts or dApps.
• Previous work with DeFi protocols or DAOs
• Familiarity with blockchain data structures, such as graphs, subsquids, or substreams.
• Prior experience developing applications driven by personal curiosity or frustrations.
• Contributions to open-source Web3 projects

What We Offer

• Opportunity to shape the future of decentralized finance and public goods funding
• Remote-friendly work environment
• Collaborative team culture focused on innovation
• Competitive compensation package
• Continuous learning and development opportunities

We believe in building technology that empowers users while maintaining the highest standards of security and reliability. If you share our vision for a more decentralized future and have the technical skills to help build it, we’d love to hear from you.

About Vac

public good protocols for the decentralized web. We do applied research based on which we build protocols, libraries and publications.

The role

We are seeking a skilled and passionate Software Developer in Test with experience in Low Level Programming to join our Vac QA team. As a Test Automation Engineer, you will play a crucial role in ensuring the reliability, performance, and scalability of distributed systems within Vac and the IFT.

Your responsibilities will include automating comprehensive test plans, as well as contributing to the identification and resolution of complex issues. Leveraging your expertise in programming and systems knowledge, you will help validating the functionality of distributed systems.

Key responsibilities

• Implement (Nim, Rust, TS, Python), and maintain integration tests in collaboration with other QAs and Devs.
• Execute and automate test plans, test cases, and test scripts to validate the functionality, performance, and scalability of distributed systems.
• Identify, reproduce, and debug complex issues in distributed systems, working closely with Logos development teams.
• Work with Docker, Kubernetes, and POSIX-like systems.
• Create and maintain scalable test automation frameworks.
• Integrate automated tests into CI pipelines using tools like Github Actions.

You ideally will have

• Solid experience with systems programming languages like Rust, Nim, Go.
• Working knowledge of Docker, Kubernetes, and POSIX-like systems.
• Experience with scripting languages like Python.
• Knowledge of tests automation tools, best practices and design patterns.
• Excellent written and conversational communication skills.
• Alignment with our core values and principles.

Bonus points

• Experience with off-the-shelf networking stacks such as libp2p.
• Experience in blockchain technology.
• Experience working for an open-source organization.
• Experience with desktop UI automation.

[Don’t worry if you don’t meet all of these criteria, we’d still love to hear from you anyway if you think you’d be a great fit for this role. Just explain to us why in your cover letter].

Hiring process

The hiring process for this role will be:

1. Interview with our POps team
2. Interview with team member from the Vac QA team
3. Take home assignment & interview with team member from the Vac QA team
4. Interview with Vac team lead

The steps may change along the way if we see it makes sense to adapt the interview stages, so please consider the above as a guideline.

Compensation

The expected compensation range for this role is negotiable, dependent on how we assess your skills and experience throughout our interview process. We are happy to pay in any mix of fiat/crypto.

Apollo is hiring a remote Senior Developer Advocate. This is a full-time position that can be done remotely anywhere in the United States.

Apollo - We help developers build great apps.

Astria is looking to hire a Developer Relations Engineer to join their team. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

We are looking for a Security Engineer to join Interop Lab’s engineering team. This inidual will play a critical role in ensuring the robustness, reliability, and security of the ecosystem. If you are passionate about blockchain security, thrive on solving complex problems, and enjoy collaborating cross-functionally, this role is for you.

Your responsibilities

• Conduct in-depth security assessments of the codebase, smart contracts, and integrations.
• Identify potential vulnerabilities and propose solutions to mitigate risks.
• Work closely with Engineering, Product, and DevOps teams to ensure security is embedded throughout the development lifecycle.
• Develop and improve scripts, tools, and practices for secure key management and cryptographic operations.
• Support the team in investigating and responding to security incidents, including post-incident analysis and developing preventive measures.
• Keep up with the latest developments in blockchain security, cryptographic techniques, and industry best practices to continuously improve our security posture.

Your profile

• 5+ years of experience in a security engineering role in web3.
• Proven experience in securing blockchain protocols, smart contracts, or cryptographic systems.
• Strong programming skills, particularly in languages such as Rust, Solidity, or Go.
• Deep understanding of cryptographic principles and blockchain architectures.
• Ability to analyze complex systems and identify potential vulnerabilities.
• Hands-on experience with penetration testing, code audits, or security research in Web3 ecosystems.
• Excellent communication skills to work effectively across teams.
• Experience working in cross-functional fully remote environments.

Why us?

• Autonomous, distributed environment with the opportunity to work collaboratively in a erse team across the world.
• The scope to contribute to high impact work and really make a difference in a decentralized protocol.
• The chance to challenge yourself whilst learning heaps of stuff in the process.
• Unlimited time off throughout the year to rest and recharge.
• Competitive compensation with stock options, experiencing growth from the initial phase.

About us

Interop Labs builds interoperability technology.

Interoperability between blockchains is crucial technology infrastructure for the growth of Web3 and the advancement of internet technology as a whole. Interop Labs is the initial developer of Axelar Network - the programmable Web3 interoperability platform, scaling the next generation of internet applications to billions of users. Axelar network’s key attributes are programmability, security and scalability.

As a Blockchain Operations Engineer, you will be responsible for the upkeep and maintenance of the Axelar Network. You will take ownership of the network and its functions and ensure smooth operations. You will work with BD and Product teams to prioritize various initiatives around the network and contribute to tooling for the network.

Your responsibilities

• Manage releases and rollout upgrades to the network in collaboration with our validators.
• Develop and iterate on tooling around network deployment, monitoring, security and other network ops related functions.
• Drive governance of the network including the delegation program.
• Strengthen our security posture and refining protocols for offline signing.
• Improve the infrastructure and deployment to improve team’s agility and velocity.
• Improve and iterate on internal tooling that our protocol engineers use to develop new features.

Your Profile

• Good understanding of cryptography.
• Scripting and tooling experience preferably in Javascript/Golang.
• Experience managing a blockchain network and coordinating upgrades.
• Familiarity with containers and Kubernetes in a cloud environment.
• Experience with monitoring and alerting tools (Grafana, Prometheus, etc.).
• Familiarity with modern CI/CD tools.
• Security first coding and deployment mindset.
• Understanding of blockchains / DeFi as a user.
• Experience with the cosmos sdk and cosmos based networks.
• Familiarity with the IBC protocol.
• Experience operating validators or nodes for various blockchains.
• Strong sense of ownership, with the ability to lead and share knowledge to reach solutions as well as the keenness to learn.
• You enjoy being hands on, being a self starter that thrives well in ambiguity.
• A problem solver at heart that can envision successful outcomes.

Why us?

• Autonomous, distributed environment with the opportunity to work collaboratively in a erse team worldwide.
• The scope to contribute to high-impact work and make a difference in a decentralized protocol.
• The chance to challenge yourself while learning heaps of stuff in the process.
• Unlimited time off throughout the year to rest and recharge.
• Competitive compensation with stock options, experiencing growth from the initial phase.

About us

Interop Labs builds interoperability technology.

Interoperability between blockchains is crucial technology infrastructure for the growth of Web3 and the advancement of internet technology as a whole. Interop Labs is the initial developer of Axelar Network - the programmable Web3 interoperability platform, scaling the next generation of internet applications to billions of users. Axelar network’s key attributes are programmability, security and scalability.

About CryptoEconLab

CryptoEconLab (CEL) designs next-generation crypto protocols—from initial design to governance and ecosystem growth. Our work spans token design, incentive engineering, market construction, and cutting-edge simulations.

The Role

We need a Research Scientist who can architect protocols from the ground up using first principles. You’ll synthesize project visions, design new token economies, mitigate adverse incentives, and guide projects from ideation to whitepaper to real-world deployment.

Key Responsibilities

• Protocol Design: Invent token economies and emission mechanisms that align with project KPIs and guard against economic exploits, particularly in DeFi, DePIN, and public goods ecosystems.
• Adverse Incentive Mitigation: Identify collusion, sybil, or other attack vectors and propose robust defenses.
• Market & Auction Construction: Develop pricing, bidding, and matching systems that foster efficient discovery and fair participation.
• Simulation & Digital Twin: Model agent-based behaviors, forecast circulating supply, and inform governance decisions with data-driven insights.
• Practical Implementation: Work closely with engineers to ensure that theoretical designs translate into functioning smart contracts and mainnet-ready architectures.
• Research Leadership: Supervise junior research scientists, providing guidance on methodologies, deliverables, and professional growth. Maintain a strong research reputation and following (e.g., publications, conference speaking engagements) and represent CEL as an industry-leading cryptoeconomic research hub.

Qualifications

• PhD or equivalent experience in Computer Science, Statistics or Applied Mathematics, or a related technical discipline.
• Track record of creating, deploying or operating new protocols or mechanisms in the crypto space.
• Strong grasp of game theory, distributed systems, and cryptoeconomic principles.
• Strong practical software engineering skills.
• Creative and analytical mind.
• Demonstrated ability to communicate complex designs succinctly to both technical and non-technical audiences.
• High energy and motivation for a fast-paced startup environment.

Why Join Us

• High-Impact Work: Shape groundbreaking protocols from scratch.
• Collaborative Environment: Join a team of leading experts in cryptoeconomics and decentralized governance.
• Competitive Compensation: 100-140k USD/year + benefits.
• Flexible, Remote-First Culture: Work with a global network of top talent across US, Europe and Asia.

Ready to define the next generation of cryptoeconomic systems? Send your CV and any relevant publications to [email protected] with the subject line “Research Scientist Application”.

We are seeking a Backend Engineer with expertise in distributed systems to expand fault-tolerance and reliability characteristics of our blockchain automation, relaying, and indexing services. In this role, you will be responsible for proactively identifying reliability and functional problems in day-to-day operation of our stack, design and implement long-term solutions, as well as short-term mitigations. You will be looking after backend applications that facilitate cross-chain protocol workflows, such as asset transfer and generalized message passing, while ensuring that our systems are fault-tolerant and highly available.

Your responsibilities

• Reliability: Broadening and deepening observability as necessary to proactively identify functional and reliability issues, coming up with long-term solutions while also mitigating short-term impact.
• Diagnostics: Doing detective work investigating cross-chain and single-chain workflows, understanding complex behaviours and inventing optimal tweaks or improvements.
• Network Liveness: Our team builds and operates the execution layer of the Axelar Network - we are responsible for ensuring every transaction on the network is delivered quickly and reliably.
• System Implementation: Build highly reliable and scalable backend components for blockchain indexing and cross-chain protocols. Develop microservices that operate across erse execution environments, including Kubernetes and AWS Lambdas.
• Distributed Systems: Leverage your expertise in distributed systems to ensure fault tolerance, graceful failure handling, and transparent recovery across our services.

Your profile

• Strong experience working with distributed systems at scale.
• Deep knowledge of fault tolerance in distributed systems and building software that fails gracefully and recovers transparently.
• Experience working with distributed messaging frameworks (RabbitMQ, AMPQ, or similar) and message driven applications.
• Experience building and orchestrating microservices running in different execution environments like Kubernetes and AWS lambdas.
• We use GoLang, Terraform, AWS in our day-to-day work. You may not be an expert with all of these technologies, but we are looking for somebody with strong skills with some of them or with transferable experience.

Why us?

• Autonomous, distributed environment with the opportunity to work collaboratively in a erse team across the world.
• The scope to contribute to high impact work and really make a difference in a decentralized protocol.
• The chance to challenge yourself whilst learning heaps of stuff in the process.
• Unlimited time off throughout the year to rest and recharge.
• Competitive compensation with stock options, experiencing growth from the initial phase.

About us

Interop Labs builds interoperability technology.

Interoperability between blockchains is crucial technology infrastructure for the growth of Web3 and the advancement of internet technology as a whole. Interop Labs is the initial developer of Axelar Network - the programmable Web3 interoperability platform, scaling the next generation of internet applications to billions of users. Axelar network’s key attributes are programmability, security and scalability.

Time zones: EST (UTC -5), CST (UTC -6), MST (UTC -7), PST (UTC -8), AKST (UTC -9), HST (UTC -10)

About Us

Close is a bootstrapped, profitable, 100% remote, ~100 person team of thoughtful iniduals who value autonomy and impact. We’re eager to make a product our customers fall in love with over and over again.

We ❤️ small scaling businesses. Since 2013, we’ve been building a CRM that focuses on better communication, without the hassle of manual data entry or a complex UI. We are out to supercharge sales productivity with the most modern, thoughtfully all-in-one, AI-powered, and communication-focused CRM.

Our app’s frontend is a single-page TypeScript web app mostly written in React (originally built with Backbone.js). Our mobile app is built using React Native. We bundle with Vite and target only modern browsers. We test with Vitest, React Testing Library, Playwright, and Chromatic (VRT). Our UI updates in near real-time and is styled via CSS modules and takes advantage of fun technologies like Websockets and WebRTC.

We care about performance (e.g. route-based code splitting or skeleton UI), maintainability, and testability of our frontend code. Our product development process is inspired by Shape Up. We sweat the UI/UX details and work collaboratively with the Product team throughout the design process. This means ing into lo-fi wireframes, and communicating continuously when those ideas are brought to life using Figma and code (Storybook).

Our frontend app is built on top of our REST API & GraphQL endpoints. Our backend tech stack consists of Python/Flask, MongoDB, Postgres, Elasticsearch, and Redis. We run our services in Docker on AWS.

We ❤️ open sourcing our code and ideas on our GitHub and on The Making of Close, our behind-the-scenes Product & Engineering blog. Check our projects such as react-custom-scroller, use-infinite-scroll, use-abortable-effect, and smart-tooltip-delay or insights from our day-to-day work on such as Under the Hood: Developing Close's AI-Powered Call Assistant, Cutting our Lead page LCP by half, and Highlights From a Complex Downshift.js Refactor.

About the Role

You would be joining one of our six cross-functional product development teams. These include the CRM, Admin & Onboarding, Conversations, Messaging & Scheduling, Automations & Integrations and Data Insights teams_._ You will be working with other frontend engineers as well as backend engineers, product managers, designers and other teams here at Close.

Come help us with projects like...

• Conceiving, designing, building, and launching new user-facing features
• Implementing new AI features to turbocharge our customers’ daily tasks
• Working with Twilio's API, WebSockets, and WebRTC to improve our calling and SMS features
• Building user-facing analytics features that provide actionable insights based on sales activity data
• Enhancing our web app with real-time updates powered by GraphQL Subscriptions
• Improving real-time collaboration user experience
• Leveraging the latest AI LLMs from providers like OpenAI, Groq and AssemblyAI
• Expanding our frontend GraphQL usage
• Extending our React component library

About You

We're looking for an experienced full-time Frontend Software Engineer to join our engineering team. Someone who has a solid understanding of web technologies and wants to help design, implement, and launch major user-facing features.

You’re comfortable working in a fast-paced environment with a small and talented team where you're supported in your efforts to grow professionally. You are able to manage your time well, communicate effectively and collaborate in a fully distributed team.

• Senior 1 & 2 level candidates should have 5+ years experience building modern frontend single page applications in JavaScript, HTML, and CSS, with at least 3 years of that experience using React.
• Staff level candidates should have 8+ years of experience.
• Mid-level candidates should have ~3 years of similar experience and be eager to level up with the right opportunity.
• You should have significant experience designing, debugging, and optimizing frontend applications to make them fast and reliable. You have significant experience with REST APIs and thoroughly understand HTTP requests. You have experience participating in code reviews and providing overall code quality suggestions to help maintain the structure and quality of the codebase.
• You should have great product sense and be able to think through user experience issues before ing into the code, and you exhibit a love for great UI.
• You care about the craftsmanship of the code and systems you produce.
• You are located in the USA (lower 48 timezones).

Bonus points if you have...

• Experience implementing real-time (e.g. websockets, polling, etc.) web apps
• Experience working with GraphQL endpoints
• Utilized AI LLMs from providers like OpenAI, Groq and AssemblyAI in a production web app
• An eye for design and experience with Figma, Sketch, Abstract, Photoshop, or similar
• Led small project teams building and launching features
• Contributed open source code (core or plugins) for a popular frontend framework such as React, Vue, or Angular
• Built B2B SaaS products
• Experience with sales or sales tools

"

OneSignal is a leading omnichannel customer engagement solution, powering personalized customer journeys across mobile and web push notifications, in-app messaging, SMS, and email. On a mission to democratize engagement, we enable over a million businesses to keep their users - including readers, fans, players and shoppers - engaged and up to date by delivering billions of messages daily.

1 in 5 new apps launches using OneSignal! We support companies in 140 countries, including Zynga, USA Today, Bitcoin.com, Eventbrite, Tribune, and many more - from startups and small businesses just getting off the ground to established companies communicating with millions of customers.

We’re Series C, venture-backed by SignalFire, Rakuten Ventures, Y Combinator, HubSpot, and BAM Elevate. We offer remote work as the default option in the United States in California, New York, New Jersey, Pennsylvania, Texas, Utah and Washington. As well as in the UK and Singapore - with plans to expand the locations we support in the future. Some roles are hybrid roles and will be listed as such. We have offices in San Mateo, CA and London, UK, and offer flex seating options for employees to work together in-person where we don't have offices. Hiring in Singapore is done in partnership with a local PEO.

OneSignal has a lot of the great tech startup qualities you'd expect, but we don't stop there. Our massive scale and small team, emphasis on healthy life balance and kindness in all our interactions, and focus on ownership and personal growth make OneSignal a uniquely great place to work. 

Our blogcontains more information about the OneSignal Engineeringcareer ladder, and ourerse team.

About The Team:

We are hiring fullstack engineers across a few teams at OneSignal. We have Senior and Staff level positions available. Your leveling and team fit will be evaluated in the interview process.

What You'll Do:

* Collaborate closely with Product Managers, Designers, and fellow engineers to rapidly scope, build, and ship high-impact features that our customers love

What You'll Bring:

* 6+ years software engineering experience building high volume, scalable SaaS applications from end-to-end.

We value a variety of experiences, and these are not required. It would be an added bonus if you have experience in any of the following:

* Experience with modern client-side development with TypeScript + React or equivalent

The New York and California base salary for Senior Software Engineer full time position is between $160,000 to $180,000, and  Staff Software Engineer full time position is between $190,000 and $210,000. Your exact starting salary is determined by a number of factors such as your experience, skills, and qualifications. In addition to base salary, we also offer a competitive equity program and comprehensive and inclusive benefits.

Qualities we look for:

* Friendliness & Empathy

In keeping with our beliefs and goals, no employee or applicant will face discrimination/harassment based on: race, color, ancestry, national origin, religion, age, gender, marital domestic partner status, sexual orientation, gender identity, disability status, or veteran status. Above and beyond discrimination/harassment based on 'protected categories,' we also strive to prevent other, subtler forms of inappropriate behavior (e.g., stereotyping) from ever gaining a foothold in our office. Whether blatant or hidden, barriers to success have no place in our workplace.

Applicants with disabilities may be entitled to reasonable accommodation under the terms of the Americans with Disabilities Act and certain state or local laws. A reasonable accommodation is a change in the way things are normally done which will ensure an equal employment opportunity without imposing undue hardship on OneSignal. Please inform us if you need assistance completing any forms or to otherwise participate in the application and/or interview process.

OneSignal collects and processes personal data submitted by job applicants in accordance with ourPrivacy Policy - including GDPR and CCPA compliance. Please see our privacy notice for job applicants.

",

"

OneSignal is a leading omnichannel customer engagement solution, powering personalized customer journeys across mobile and web push notifications, in-app messaging, SMS, and email. On a mission to democratize engagement, we enable over a million businesses to keep their users - including readers, fans, players and shoppers - engaged and up to date by delivering billions of messages daily.

1 in 5 new apps launches using OneSignal! We support companies in 140 countries, including Zynga, USA Today, Bitcoin.com, Eventbrite, Tribune, and many more - from startups and small businesses just getting off the ground to established companies communicating with millions of customers.

We’re Series C, venture-backed by SignalFire, Rakuten Ventures, Y Combinator, HubSpot, and BAM Elevate. We offer remote work as the default option in the United States in California, New York, New Jersey, Oregon, Pennsylvania, Texas, Utah and Washington. As well as in the UK and Singapore - with plans to expand the locations we support in the future. Some roles are hybrid roles and will be listed as such. We have offices in San Mateo, CA and London, UK, and offer flex seating options for employees to work together in-person where we don't have offices. Hiring in Singapore is done in partnership with a local PEO.

OneSignal has a lot of the great tech startup qualities you'd expect, but we don't stop there. Our massive scale and small team, emphasis on healthy life balance and kindness in all our interactions, and focus on ownership and personal growth make OneSignal a uniquely great place to work. 

Our blogcontains more information about the OneSignal Engineeringcareer ladder, and ourerse team.

About The Team:

We are hiring fullstack engineers across a few teams at OneSignal. We have Senior and Staff level positions available. Your leveling and team fit will be evaluated in the interview process.

What You'll Do:

* Collaborate closely with Product Managers, Designers, and fellow engineers to rapidly scope, build, and ship high-impact features that our customers love

What You'll Bring:

* 6+ years software engineering experience building high volume, scalable SaaS applications from end-to-end.

We value a variety of experiences, and these are not required. It would be an added bonus if you have experience in any of the following:

* Experience with modern client-side development with TypeScript + React or equivalent

The New York and California base salary for Senior Software Engineer full time position is between $160,000 to $180,000, and  Staff Software Engineer full time position is between $190,000 and $210,000. Your exact starting salary is determined by a number of factors such as your experience, skills, and qualifications. In addition to base salary, we also offer a competitive equity program and comprehensive and inclusive benefits.

Qualities we look for:

* Friendliness & Empathy

In keeping with our beliefs and goals, no employee or applicant will face discrimination/harassment based on: race, color, ancestry, national origin, religion, age, gender, marital domestic partner status, sexual orientation, gender identity, disability status, or veteran status. Above and beyond discrimination/harassment based on 'protected categories,' we also strive to prevent other, subtler forms of inappropriate behavior (e.g., stereotyping) from ever gaining a foothold in our office. Whether blatant or hidden, barriers to success have no place in our workplace.

Applicants with disabilities may be entitled to reasonable accommodation under the terms of the Americans with Disabilities Act and certain state or local laws. A reasonable accommodation is a change in the way things are normally done which will ensure an equal employment opportunity without imposing undue hardship on OneSignal. Please inform us if you need assistance completing any forms or to otherwise participate in the application and/or interview process.

OneSignal collects and processes personal data submitted by job applicants in accordance with ourPrivacy Policy - including GDPR and CCPA compliance. Please see our privacy notice for job applicants.

",

"

OneSignal is a leading omnichannel customer engagement solution, powering personalized customer journeys across mobile and web push notifications, in-app messaging, SMS, and email. On a mission to democratize engagement, we enable over a million businesses to keep their users - including readers, fans, players and shoppers - engaged and up to date by delivering billions of messages daily.

1 in 5 new apps launches using OneSignal! We support companies in 140 countries, including Zynga, USA Today, Bitcoin.com, Eventbrite, Tribune, and many more - from startups and small businesses just getting off the ground to established companies communicating with millions of customers.

We’re Series C, venture-backed by SignalFire, Rakuten Ventures, Y Combinator, HubSpot, and BAM Elevate. We offer remote work as the default option in the United States in California, Colorado, Massachusetts, New York, New Jersey, Oregon, Pennsylvania, Texas, Utah and Washington. As well as in the UK and Singapore - with plans to expand the locations we support in the future. Some roles are hybrid roles and will be listed as such. We have offices in San Mateo, CA and London, UK, and offer flex seating options for employees to work together in-person where we don't have offices. Hiring in Singapore is done in partnership with a local PEO.

OneSignal has a lot of the great tech startup qualities you'd expect, but we don't stop there. Our massive scale and small team, emphasis on healthy life balance and kindness in all our interactions, and focus on ownership and personal growth make OneSignal a uniquely great place to work. 

Our blogcontains more information about the OneSignal Engineeringcareer ladder, and ourerse team.

About The Team:

The SMS team at OneSignal develops the UI and API powering our market leading text messaging customer engagement solution. The team tackles challenges at the intersection of engineering and product development, solving complex problems such as global quiet hours compliance across 40 time zones, and conversational text messaging in the age of AI.

We’re continually improving our product to enhance our customers’ experience and empower them to create effective and impactful messaging campaigns. We move quickly on delivering value to our customers, while maintaining a high standard for reliability and functionality.

As a Staff Software Engineer, you'll be expected to take ownership of end-to-end projects that require developing in multiple languages across the stack. Your ability to consider performance characteristics, user experience, and maintainability of systems will be critical to success in this role. Your contributions will shape the way household brand names engage with their users. You will drive organizational proficiencies in key technologies and technical areas, such as scalable architecture and programming language expertis

What You'll Do:

* Collaborate with Product Managers, Designers, and Engineers to implement new features for our Customer Engagement products, using Rust, TypeScript, and Ruby.

What You'll Bring:

* 8+ years of professional software development experience

We value a variety of experiences, and these are not required. It would be an added bonus if you have experience in any of the following:

* Experience with event streaming framework such as Apache Kafka

The New York and California base salary for Staff Software Engineer full time position is between $190,000 and $210,000. Your exact starting salary is determined by a number of factors such as your experience, skills, and qualifications. In addition to base salary, we also offer a competitive equity program and comprehensive and inclusive benefits.

Qualities we look for:

* Friendliness & Empathy

In keeping with our beliefs and goals, no employee or applicant will face discrimination/harassment based on: race, color, ancestry, national origin, religion, age, gender, marital domestic partner status, sexual orientation, gender identity, disability status, or veteran status. Above and beyond discrimination/harassment based on 'protected categories,' we also strive to prevent other, subtler forms of inappropriate behavior (e.g., stereotyping) from ever gaining a foothold in our office. Whether blatant or hidden, barriers to success have no place in our workplace.

Applicants with disabilities may be entitled to reasonable accommodation under the terms of the Americans with Disabilities Act and certain state or local laws. A reasonable accommodation is a change in the way things are normally done which will ensure an equal employment opportunity without imposing undue hardship on OneSignal. Please inform us if you need assistance completing any forms or to otherwise participate in the application and/or interview process.

OneSignal collects and processes personal data submitted by job applicants in accordance with ourPrivacy Policy - including GDPR and CCPA compliance. Please see our privacy notice for job applicants.

",

"

OneSignal is a leading omnichannel customer engagement solution, powering personalized customer journeys across mobile and web push notifications, in-app messaging, SMS, and email. On a mission to democratize engagement, we enable over a million businesses to keep their users - including readers, fans, players and shoppers - engaged and up to date by delivering billions of messages daily.

1 in 5 new apps launches using OneSignal! We support companies in 140 countries, including Zynga, USA Today, Bitcoin.com, Eventbrite, Tribune, and many more - from startups and small businesses just getting off the ground to established companies communicating with millions of customers.

We’re Series C, venture-backed by SignalFire, Rakuten Ventures, Y Combinator, HubSpot, and BAM Elevate. We offer remote work as the default option in the United States in California, New York, New Jersey, Pennsylvania, Texas, Utah and Washington. As well as in the UK and Singapore - with plans to expand the locations we support in the future. Some roles are hybrid roles and will be listed as such. We have offices in San Mateo, CA and London, UK, and offer flex seating options for employees to work together in-person where we don't have offices. Hiring in Singapore is done in partnership with a local PEO.

OneSignal has a lot of the great tech startup qualities you'd expect, but we don't stop there. Our massive scale and small team, emphasis on healthy life balance and kindness in all our interactions, and focus on ownership and personal growth make OneSignal a uniquely great place to work. 

Ourblog contains more information about the OneSignal Engineeringcareer ladder, and ourerse team.

About The Team:

We are hiring backend engineers across a few teams at OneSignal, including Integrations, Analytics, and User Data. We have Senior and Staff level positions available. Your leveling and team fit will be evaluated in the interview process. 

What You'll Do:

* Collaborate closely with Product Managers, Designers, and fellow engineers to rapidly scope, build, and ship high-impact features that our customers love

What You'll Bring:

* 6+ years of professional software development experience

We value a variety of experiences, and these are not required. It would be an added bonus if you have experience in any of the following:

* Experience with Ruby/Rails

The New York and California base salary for Senior Software Engineer full time position is between $160,000 to $180,000, and  Staff Software Engineer full time position is between $190,000 and $210,000. Your exact starting salary is determined by a number of factors such as your experience, skills, and qualifications. In addition to base salary, we also offer a competitive equity program and comprehensive and inclusive benefits.

Qualities we look for:

* Friendliness & Empathy

In keeping with our beliefs and goals, no employee or applicant will face discrimination/harassment based on: race, color, ancestry, national origin, religion, age, gender, marital domestic partner status, sexual orientation, gender identity, disability status, or veteran status. Above and beyond discrimination/harassment based on 'protected categories,' we also strive to prevent other, subtler forms of inappropriate behavior (e.g., stereotyping) from ever gaining a foothold in our office. Whether blatant or hidden, barriers to success have no place in our workplace.

Applicants with disabilities may be entitled to reasonable accommodation under the terms of the Americans with Disabilities Act and certain state or local laws. A reasonable accommodation is a change in the way things are normally done which will ensure an equal employment opportunity without imposing undue hardship on OneSignal. Please inform us if you need assistance completing any forms or to otherwise participate in the application and/or interview process.

OneSignal collects and processes personal data submitted by job applicants in accordance with ourPrivacy Policy - including GDPR and CCPA compliance. Please see our privacy notice for job applicants.

",

"

OneSignal is a leading omnichannel customer engagement solution, powering personalized customer journeys across mobile and web push notifications, in-app messaging, SMS, and email. On a mission to democratize engagement, we enable over a million businesses to keep their users - including readers, fans, players and shoppers - engaged and up to date by delivering billions of messages daily.

1 in 5 new apps launches using OneSignal! We support companies in 140 countries, including Zynga, USA Today, Bitcoin.com, Eventbrite, Tribune, and many more - from startups and small businesses just getting off the ground to established companies communicating with millions of customers.

We’re Series C, venture-backed by SignalFire, Rakuten Ventures, Y Combinator, HubSpot, and BAM Elevate. We offer remote work as the default option in the United States in California, Colorado, Massachusetts, New York, New Jersey, Oregon, Pennsylvania, Texas, Utah and Washington. As well as in the UK and Singapore - with plans to expand the locations we support in the future. Some roles are hybrid roles and will be listed as such. We have offices in San Mateo, CA and London, UK, and offer flex seating options for employees to work together in-person where we don't have offices. Hiring in Singapore is done in partnership with a local PEO.

OneSignal has a lot of the great tech startup qualities you'd expect, but we don't stop there. Our massive scale and small team, emphasis on healthy life balance and kindness in all our interactions, and focus on ownership and personal growth make OneSignal a uniquely great place to work. 

Ourblog contains more information about the OneSignal Engineeringcareer ladder, and ourerse team.

About The Team:

Our Journey’s team develops the product our customers use to orchestrate and evaluate multi-channel user engagement campaigns across SMS, Push, Email and more. This team maintains a deep understanding of our customers’ workflows and the technical details of all the messaging channels we offer to build highly flexible, no-code solutions that enable our customers to confidently engage the right user, at the right moment, with the right message.

As a Senior Software Engineer, you'll be expected to take ownership of end-to-end projects that require developing in multiple languages across the stack. Your ability to consider performance characteristics, user experience, and maintainability of systems will be critical to success in this role. Your contributions will shape the way household brand names engage with their users.

What You'll Do:

* Collaborate with Product Managers, Designers, and Engineers to implement new features for our Customer Engagement products, using Rust, Go, Ruby and more.

What You'll Bring:

* 6+ years of professional software development experience

We value a variety of experiences, and these are not required. It would be an added bonus if you have experience in any of the following:

* Experience with Rust or Ruby at scale in production environments

The New York and California base salary for Senior Software Engineer full time position is between $170,000 to $190,000. Your exact starting salary is determined by a number of factors such as your experience, skills, and qualifications. In addition to base salary, we also offer a competitive equity program and comprehensive and inclusive benefits.

Qualities we look for:

* Friendliness & Empathy

In keeping with our beliefs and goals, no employee or applicant will face discrimination/harassment based on: race, color, ancestry, national origin, religion, age, gender, marital domestic partner status, sexual orientation, gender identity, disability status, or veteran status. Above and beyond discrimination/harassment based on 'protected categories,' we also strive to prevent other, subtler forms of inappropriate behavior (e.g., stereotyping) from ever gaining a foothold in our office. Whether blatant or hidden, barriers to success have no place in our workplace.

Applicants with disabilities may be entitled to reasonable accommodation under the terms of the Americans with Disabilities Act and certain state or local laws. A reasonable accommodation is a change in the way things are normally done which will ensure an equal employment opportunity without imposing undue hardship on OneSignal. Please inform us if you need assistance completing any forms or to otherwise participate in the application and/or interview process.

OneSignal collects and processes personal data submitted by job applicants in accordance with ourPrivacy Policy - including GDPR and CCPA compliance. Please see our privacy notice for job applicants.

",

"

OneSignal is a leading omnichannel customer engagement solution, powering personalized customer journeys across mobile and web push notifications, in-app messaging, SMS, and email. On a mission to democratize engagement, we enable over a million businesses to keep their users - including readers, fans, players and shoppers - engaged and up to date by delivering billions of messages daily.

1 in 5 new apps launches using OneSignal! We support companies in 140 countries, including Zynga, USA Today, Bitcoin.com, Eventbrite, Tribune, and many more - from startups and small businesses just getting off the ground to established companies communicating with millions of customers.

We’re Series C, venture-backed by SignalFire, Rakuten Ventures, Y Combinator, HubSpot, and BAM Elevate. We offer remote work as the default option in the United States in California, Colorado, Massachusetts, New York, New Jersey, Oregon, Pennsylvania, Texas, Utah and Washington. As well as in the UK and Singapore - with plans to expand the locations we support in the future. Some roles are hybrid roles and will be listed as such. We have offices in San Mateo, CA and London, UK, and offer flex seating options for employees to work together in-person where we don't have offices. Hiring in Singapore is done in partnership with a local PEO.

OneSignal has a lot of the great tech startup qualities you'd expect, but we don't stop there. Our massive scale and small team, emphasis on healthy life balance and kindness in all our interactions, and focus on ownership and personal growth make OneSignal a uniquely great place to work. 

Ourblog contains more information about the OneSignal Engineeringcareer ladder, and ourerse team.

About The Team:

Our Journey’s team develops the product our customers use to orchestrate and evaluate multi-channel user engagement campaigns across SMS, Push, Email and more. This team maintains a deep understanding of our customers’ workflows and the technical details of all the messaging channels we offer to build highly flexible, no-code solutions that enable our customers to confidently engage the right user, at the right moment, with the right message.

As a Senior Software Engineer, you'll be expected to take ownership of end-to-end projects that require developing in multiple languages across the stack. Your ability to consider performance characteristics, user experience, and maintainability of systems will be critical to success in this role. Your contributions will shape the way household brand names engage with their users.

What You'll Do:

* Collaborate with Product Managers, Designers, and Engineers to implement new features for our Customer Engagement products, using Rust, Go, Ruby and more.

What You'll Bring:

* 6+ years of professional software development experience

We value a variety of experiences, and these are not required. It would be an added bonus if you have experience in any of the following:

* Experience with Rust or Ruby at scale in production environments

The New York and California base salary for Senior Software Engineer full time position is between $170,000 to $190,000. Your exact starting salary is determined by a number of factors such as your experience, skills, and qualifications. In addition to base salary, we also offer a competitive equity program and comprehensive and inclusive benefits.

Qualities we look for:

* Friendliness & Empathy

In keeping with our beliefs and goals, no employee or applicant will face discrimination/harassment based on: race, color, ancestry, national origin, religion, age, gender, marital domestic partner status, sexual orientation, gender identity, disability status, or veteran status. Above and beyond discrimination/harassment based on 'protected categories,' we also strive to prevent other, subtler forms of inappropriate behavior (e.g., stereotyping) from ever gaining a foothold in our office. Whether blatant or hidden, barriers to success have no place in our workplace.

Applicants with disabilities may be entitled to reasonable accommodation under the terms of the Americans with Disabilities Act and certain state or local laws. A reasonable accommodation is a change in the way things are normally done which will ensure an equal employment opportunity without imposing undue hardship on OneSignal. Please inform us if you need assistance completing any forms or to otherwise participate in the application and/or interview process.

OneSignal collects and processes personal data submitted by job applicants in accordance with ourPrivacy Policy - including GDPR and CCPA compliance. Please see our privacy notice for job applicants.

",

MongoDB is hiring a remote Senior Developer Advocate. This is a full-time position that can be done remotely anywhere in the United States.

MongoDB - The database for modern applications.

We’re looking for a front-end developer to help with the exciting projects we have lined up: from making improvements to our existing products to helping with the development of a brand new Drag & Drop builder which more than half a million people will use!

Why MailerLite?

Wondering why we think you’ll love working with MailerLite? Here are our favorite 6 reasons!

• You'll be challenged with interesting tasks
  We aim to create a totally new Drag & Drop builder for emails, landing pages, websites and forms, and you will be part of that process.

• You'll grow, develop and evolve
  As part of a team that's always looking for new, innovative ways to offer value for customers, you'll constantly be experimenting, learning, and trying out new things.

• You'll take ownership
  We expect you to take full responsibility and ownership of your tasks. Team leads avoid micromanaging and minimize interruptions so you can stay focused on your assignments.

• You’ll have experts on hand
  Whenever you’re stuck, your teammates with a wide range of different expertise are ready to help you grow. And they’d love for you to share your knowledge too!

• You'll pick where you work, every day
  We embrace the remote culture. Every day you get to choose what environment makes you most productive.

• You'll have stability
  We value a stable workplace! MailerLite has been thriving for over 10 years and our year-over-year growth continues to increase.

What you’ll work with

• Creating our new Drag & Drop builder from the ground up
• Providing insights and optimizing the editor to be blazing fast
• Building reusable components and libraries
• Implementing tests into existing workflows

Our tech stack

• VueJS 3
• Composition API
• Node.js
• TailwindCSS
• PostgreSQL
• Git & Docker
• Laravel

Team Achievements

• Innovative Development: Successfully launched a new, feature-rich, drag-and-drop builder for creating professional landing pages.

• User-Centric Design: Designed an intuitive interface, highly rated by users for its ease of use and versatility.

• Industry Leadership: On track to becoming the industry standard for drag-and-drop builders, empowering users to create stunning emails, landing pages, and websites effortlessly.

• Robust & Reliable: users consistently highlight builders reliability and effectiveness for beginners and professionals alike

What we expect of you

• 3+ years as a Front-End Developer with web technologies, including experience with a reactive framework (Vue.js preferred, but Angular or React also acceptable)
• Familiar with Tailwind CSS or other CSS frameworks
• You can implement designs into responsive, user-friendly web pages
• Writing unit, component and end-to-end tests is a must for you to be able to deliver code
• Familiarity with REST-based APIs
• Experience with Docker and Git
• You have a problem-solving mindset
• Proficient verbal and written communication skills in English
• Work schedule - 4h overlap with CEST time zone

Bonus

• PHP experience
• Typescript and/or AngularJS knowledge
• Knowledge of any PHP framework (we mostly use Laravel)
• Production experience with SQL (PostgreSQL or MySQL)

What we offer

• Yearly gross salary: $50,000-$84,000
• Remote-first culture with the team working remotely from all over the world
• International health insurance provided with coverage in most countries. Monthly healthcare payout available in select countries where coverage is limited
• Company-paid retreats. Once per year we gather for a week in an exotic location to work, learn and have fun together
• 31 days of vacation per year. We encourage you to unplug and recharge!
• 12 paid sick days for your physical and mental well-being, no doctor's note required. Parents can use them to care for their sick children
• 4 creative days. One paid day off per quarter to do something creative and fun
• 12 parental days per year. Enjoy one paid day off each month to treasure time with your children
• Parental leave. Enjoy paid bonding time at 100% of your salary when welcoming a new child into your family through birth or adoption - 3 months for primary caregivers and 1 month for secondary caregivers
• Parenting budget of $1000. Celebrate the arrival of your little one, whether through childbirth or adoption, with a special gift from us
• Joy Budget. Annual budget to spend on whatever that brings you joy
• MacBook and other tools that'll help you to do your job efficiently

For more information, visit our Hiring journey and FAQ pages.

Time zones: SBT (UTC +11), GMT (UTC +0), CET (UTC +1), EET (UTC +2), MSK (UTC +3)

SlideSpeak is an AI startup helping businesses create presentations more easily. We've launched 1 year ago and users have already uploaded over 4 million files. Our growth has been staggering 🚀 We’re expanding our team to continue developing innovative features for our RAG based AI presentation tool. We're looking for someone who likes to work in a very friendly environment. Our team is like a little family... we all get along great and meet up at least every 3 months in person and work together.

Website: https://slidespeak.co

**

**

• Build and maintain backend services using Python, FastAPI, and other frameworks.
• Develop and optimize front-end UI with NextJS, React, and TypeScript.
• Develop LLM services to generate content for presentations (images, infographics, icons, content, ...)
• Collaborate on database management and query optimization.
• Contribute to all phases of the development lifecycle, from design to deployment.

Skills and Qualifications:

• Degree in Computer Science or a related field.
• Proficiency in Python and experience with backend frameworks and databases.
• Experience with React and/or NextJS + TypeScript.
• Familiarity with cloud services (AWS, GCP, Azure) and server management via shell.
• At least some practical work experience through internships or personal projects.

Nice-to-Have:

• Experience with Python backends, FastAPI, and RAG frameworks like LangChain, Llama Index.
• Knowledge of vector databases and advanced database management systems.
• Knowledge of 2D graphics editors and SVG (yep, it gets quite nitty gritty)

Our Tech Stack:

• Frontend: NextJS, Zustand, Tailwind, Prisma
• Backend: Python, FastAPI, Llama Index
• Database: PostgreSQL
• Vector Database: PGVector
• LLMs + AI Models: Azure OpenAI, Google Gemini Flash, Replica
• DevOps: GitHub Actions, Checkly for E2E testing
• Infrastructure: Azure, AWS and Virtual Servers with Docker Compose

Benefits:

• Competitive salary range of 50-75k USD, depending on experience.
• Fully remote work environment with flexible scheduling (we would love for you to be able to travel every 3 months to meet in person).
• Company-provided laptop and a software budget tailored to your needs.
• Budget for attending conferences (AI Engineer, Figma Config, WebSummit and more).
• Extraordinary quarterly fully-paid trips across Europe, including accommodations and flights, to foster team bonding and creativity (our next trips are to Cape Town and SF) 🌎.
• WeWork membership

To apply, please submit your resume and a brief cover letter with your experience and why you're a good fit for us. Have you built any AI tools, have you worked with 2D graphics software?

We’re excited to hear from you and look forward to possibly welcoming you to SlideSpeak, where your work will help shape the future of presentation technology!

Overview

CData Virtuality is a strong data integration and management solution and Product Unit of CData Software. We are known for our powerful data virtualization capabilities that enable companies to access, integrate, and manage data from multiple sources in real-time without the need for extensive data replication. CData Virtuality's platform supports a variety of data sources and formats, making it a powerful tool for organizations looking to streamline their data infrastructure and improve decision-making processes. 

The Position

Join our team as a Software Support Engineer and become a pivotal part of a leading data virtualization software provider that is transforming the way businesses access and manage their data globally. With our innovative data virtualization solutions, we empower companies worldwide to make data-driven decisions efficiently. Your role will ensure optimal operation and seamless support for our erse customer base, enhancing their experience with our software.

Your Role and Impact

As a Software Support Engineer, you will play a crucial role in both the proactive and reactive aspects of our service delivery. Your responsibilities will span across various support levels, monitoring, and operational tasks, including:

• SaaS Support: Handle customer inquiries through in-product Intercom, providing both 1st and 2nd level support.
• CData Virtuality Platform Support: Offer first-level support to EU and US customers, focusing on ticket-based troubleshooting and problem resolution.
• SaaS Monitoring: Utilize monitoring systems and tools to identify and address incidents proactively.
• Setup and Operations: Set up, configure, and use cloud management and monitoring tools, as well as manage cloud environments, perform software updates/upgrades on our customers' Windows and Linux machines (remote via RDP and SSH), and support the operation of our software and servers.

What We're Seeking

Must-have Requirements:

Personal:

• Strong communication skills and fluency in English.
• Self-organized, highly motivated, and responsible.
• Empathic with an analytical approach.
• Exceptional problem-solving skills and an inquiring mindset.

Professional:

• Understanding of database technology and Linux.
• Proficiency in SQL and ability to debug source code.
• Experience in software support/consulting or a comparable function.
• Skilled in troubleshooting and understanding documentation for desired behavior.
• Ability to simplify complex topics and work independently under pressure.

Nice-to-have Requirements:

• Experience with SLA-bound operations and screen-sharing/phone support.
• Familiarity with bug trackers, Cloud Platforms (AWS, Azure), and container platforms.

Your Advantages

Joining our team means you'll be at the forefront of the tech industry's latest trends, working with a group of dedicated professionals who are passionate about data virtualization. You'll have the opportunity to grow your skill set in a dynamic, supportive environment, and make a significant impact on our company's success and customer satisfaction. We offer a competitive salary, flexible working conditions, and the chance to be part of an exciting journey in a rapidly growing industry.

Apply Now

If you're a technically inclined inidual passionate about solving complex problems and eager to contribute to our team's success, we want to hear from you! Submit your application today and take the first step towards a fulfilling career with us.

What our amazing team worldwide loves about working with CData Virtuality

• A stable and reliable job with the freedom and flexibility of a freelancer

• Working as a contractor worldwide or as an employee in Germany

• Flexible working hours and workplace

• Paid vacation days and paid sick leaves

• Fast and dependable monthly payment – in EUR, USD, or Crypto, as you prefer

• Contributing to the success of a growing company

• Working with cutting-edge technologies

• Knowledgeable and approachable C-Level

• Continuity and growth potential

• Smart, friendly, and international colleagues

• Full integration into our teams and invitations for our team events worldwide

-------------------------------------------------------------------------------------

We are committed to creating a erse environment and are proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.

"

OneSignal is a leading omnichannel customer engagement solution, powering personalized customer journeys across mobile and web push notifications, in-app messaging, SMS, and email. On a mission to democratize engagement, we enable over a million businesses to keep their users - including readers, fans, players and shoppers - engaged and up to date by delivering billions of messages daily.

1 in 5 new apps launches using OneSignal! We support companies in 140 countries, including Zynga, USA Today, Bitcoin.com, Eventbrite, Tribune, and many more - from startups and small businesses just getting off the ground to established companies communicating with millions of customers.

We’re Series C, venture-backed by SignalFire, Rakuten Ventures, Y Combinator, HubSpot, and BAM Elevate. We offer remote work as the default option in the United States in California, New York, New Jersey, Pennsylvania, Texas, Utah and Washington. As well as in the UK and Singapore - with plans to expand the locations we support in the future. Some roles are hybrid roles and will be listed as such. We have offices in San Mateo, CA and London, UK, and offer flex seating options for employees to work together in-person where we don't have offices. Hiring in Singapore is done in partnership with a local PEO.

OneSignal has a lot of the great tech startup qualities you'd expect, but we don't stop there. Our massive scale and small team, emphasis on healthy life balance and kindness in all our interactions, and focus on ownership and personal growth make OneSignal a uniquely great place to work. 

About The Team:

As an SDK-centric company, we’re constantly evolving our offerings and improving the Developer Experience across the board.  With that objective in mind, we are looking for experienced Software Engineers to join our SDK Team. 

The SDK Team is responsible for the components of our software stack that we ship to our customers.  These include client libraries for our REST API, CLI Tools, libraries embedded in customer applications(e.g. the Android SDK), and associated tooling and resources. 

Understanding how to better serve our developers is part of the work we do in the SDK Team.

What You'll Do:

* Solving challenging business use-cases in a project with elegant, readable code and clear tests

What You'll Bring:

* At least 6 years experience working as a software engineer.

Preferred skills and experience:

* Experience writing SDKs, Client Libraries, or other Developer Tools.

The New York and California base salary for this full time position is between $160,000 to $180,000. Your exact starting salary is determined by a number of factors such as your experience, skills, and qualifications. In addition to base salary, we also offer a competitive equity program and comprehensive and inclusive benefits.

Qualities we look for:

* Friendliness & Empathy

In keeping with our beliefs and goals, no employee or applicant will face discrimination/harassment based on: race, color, ancestry, national origin, religion, age, gender, marital domestic partner status, sexual orientation, gender identity, disability status, or veteran status. Above and beyond discrimination/harassment based on 'protected categories,' we also strive to prevent other, subtler forms of inappropriate behavior (e.g., stereotyping) from ever gaining a foothold in our office. Whether blatant or hidden, barriers to success have no place in our workplace.

Applicants with disabilities may be entitled to reasonable accommodation under the terms of the Americans with Disabilities Act and certain state or local laws. A reasonable accommodation is a change in the way things are normally done which will ensure an equal employment opportunity without imposing undue hardship on OneSignal. Please inform us if you need assistance completing any forms or to otherwise participate in the application and/or interview process.

OneSignal collects and processes personal data submitted by job applicants in accordance with ourPrivacy Policy - including GDPR and CCPA compliance. Please see our privacy notice for job applicants.

",

Why should you join Secfix?

Secfix is an early-stage fully remote startup in the best sense of the word. We’re a fun, close-knit team on a mission to automate security and compliance for modern companies and become the European compliance automation leader. We rapidly grew from just three founders to 20 people in less than 2 years after founding.

Your work will significantly impact our tech product used by CTOs, engineering teams, COOs and the whole team will celebrate your wins.

In comparison to many startups we are growing the team at a healthy rate and there is a balance between fast growth and maintaining our runway as we scale. Most of our costs are already covered by revenue.

With new challenges (we're looking to 2x the team next year), you're assured of growth and progress. Our trajectory is fueled by top investors, including Octopus Ventures, Neosfer (Commerzbank), founders of Signavio and many more angels.

Who are we looking for?

We're building an environment at Secfix where ambitious, independent engineers can thrive. We want to grow with people who take pride on building and maintaining actual products, who are curious about how the features we ship are used daily to solve real challenges, and who'll use their in-depth engineering insights to push the envelope on what we can achieve together. We own products and outcomes, not Jira tickets.

Bring your commitment and drive to grow, and we’ll deliver an environment that keeps you happy, healthy, and empowered to do your best work with us.

Scope of this role: 90% backend troubleshooting, 10% new feature development.

Experience that you will ideally bring

• 1+ years of experience in Backend Engineering through first full-time job and internships.
• Solid foundation in object-oriented programming with Java.
• First professional production experience in Java Spring Boot, Hibernate, and SQL.
• Familiarity with 3rd-party APIs and interest in learning monitoring and troubleshooting.
• Willingness to take ownership of tasks, collaborate, and adapt to feedback.

You should apply if:

• You’re ambitious, independent and growth-oriented.
• You bring young talent to our team with at least 1 year of equivalent experience.
• You have strong engineering fundamentals, code efficiently, and you know what you're great at and what you're less great at.
• You thrive when you have autonomy, own as many of the details as possible, and project manage your own work.
• You’re comfortable collaborating and communicating in a remote environment, especially in writing and on video calls. You understand that working remotely doesn't mean working alone. Remember, it requires more pro-active communication than working in the office.

You should not apply if:

• You need a lot of processes to tell you what to do or you're comfortable only picking up highly detailed tickets from a JIRA board
• You only want to write code and don’t really care about the bigger picture and customers
• You don’t want to test, deploy, monitor and troubleshoot your own code
• You don’t want to lead your own projects, but rather be led by someone else
• You don't want to collaborate closely with other areas of the business or engage with users when needed

What happens when you join us?

• You’ll own complex backend issues: Work closely with the Tech Lead to take on challenging backend problems and resolve them autonomously.
• You’ll debug, troubleshoot, and fix bugs: Solve real customer-impacting issues in our production environment, ensuring a smooth experience for our users.
• You’ll strengthen your backend skills: Work with cutting-edge technologies like Java Spring Boot, Hibernate, and SQL, and develop a strong foundation in backend development.
• You’ll collaborate and grow: Work with a talented and supportive team to analyze root causes, design solutions, and improve our backend systems.
• You’ll contribute to new features: Occasionally work on feature development as the team and product expand.
• You’ll live by our values:
  • We are obsessed with our customers.
  • We build smart.
  • We create trust
  • We are hacky.
  • We take ownership.
  • We are leaders of remote

Our Technology Stack

• Frontend: Typescript, Angular, Ngrx, Tailwind, Material UI
• Backend: Java SpringBoot, Postrgesql, Hibernate
• MDM product: Golang & Osquery
• Infrastructure: AWS with ECS
• Tools: Gitlab CI/CD, Figma, Slack, Notion, Gather.town, ClickUp

Interview Process

We aim to invite successful applicants to interview within a week and provide feedback after the take-home task stage.

Applicants can expect the following:

1. An Introductory call with a member of our talent team ~ 15-20 minutes
2. Take home task (scope: max. 1-2h) and technical interview with Tech Lead
3. Virtual on-site with the team and co-founders on Gather.town (approx. 2 hours)
4. Offer stage

After sending us your application in, please keep an eye out for an email from Grigory (CTO) or Chiara (People Ops). We will respond and move as quickly as possible.

What We Offer

• Remote Work: 100% remote work with a virtual office in Gather.
• Competitive Salary: Industry-competitive local salaries. We pay local rates that are at or above the market. We share this philosophy with GitLab.
• Equity: Generous equity package – we’re all owners of Secfix and beneficiaries of our collective success.
• Holidays: 26 days holiday + local public holidays.
• Health Insurance: Comprehensive health coverage.
• Development Budget: €1,000 annual personal development budget.
• Workspace Budget: Remote workspace budget and access to co-working spaces.
• Annual Retreat: Annual retreat to build connections and inspire ideas (this year we’re headed to Milan!).
• Tech Equipment: Latest tech equipment (MacBook, monitors, headphones).
• Company Events: Company-wide events to build relationships and have some fun!
• Mentorship: We are backed by top VCs and accelerators and have direct access to world-class mentors.

Please note: We are an equal-opportunity employer and remote-only company. We work in sync using Gather as our virtual office. As a small fast-growing company, we believe in the need for an in-sync component of daily communication and therefore cannot support 100% asynchronous work.

Mozilla is hiring a remote Staff Machine Learning Engineer, Gen AI. This is a full-time position that can be done remotely anywhere in the United Kingdom.

Mozilla - Non-profit champions of the Internet.

Logos is a movement supporting the development of the decentralised web. Logos technologies lay the foundations for a freer internet upon which communities can evolve into network states. Each protocol in the Logos stack seeks to empower its users while upholding civil liberties and fundamental freedoms.

About Waku

A family of generalised P2P communications protocols. The messaging layer of the Logos stack. Waku is private, censorship resistant, modular, and scalable by design. This combination of features makes Waku suitable to run in a wide range of environments, including phones and browsers, while upholding its users’ rights to private communications.

About Status

A blockchain-based super app that combines private messaging, a wallet, a DApp browser, and tools for web3 community management. Status aims to be a truly decentralised communication tool and, since its founding in 2017, has been progressively removing reliance on centralised infrastructure. The application leverages Waku and other technologies developed under the IFT umbrella.

Key responsibilities

• Research and document the current chat and related app protocols implemented in the Status application
• Design and specify new application protocols that use Waku, Codex and other IFT technologies; ensure the protocols are securely scalable and privacy-preserving.
• Use a layered protocol approach that is mindful and explicit about what it requires, what it provides, under what threat models, and with what trade-offs.
• Build PoCs to demonstrate the working of new or modified protocols in nimlang and JavaScript.
• Liaise with the Waku research team to understand the Waku protocols and how to build secure applications using them.
• Liaise with Status leadership to agree on properties for new protocols and related user-facing features.
• Collaborate with the expert researchers within Vac and apply their specialised knowledge in cryptography and other related fields.
• Collaborate with Waku test engineers to simulate and test behaviour of new and modified protocols

You will ideally have

• A strong academic background with proven experience in applied research and translating research findings into user-facing products.
• Excellent verbal and written skills, especially in interpreting and compiling new technical specification documents
• Experience with off-the-shelf networking stacks such as libp2p
• Familiarity with encryption and key exchange mechanisms
• Experience with building end-to-end instant messaging protocols
• Experience with low level/strongly typed languages (C/C++/Go/Rust)
• A strong alignment to our mission: https://waku.org/about/

Bonus points:

• Comfortable working remotely and asynchronously
• Experience working for an open source organisation.
• Experience with cryptography such as OTR, X3DH, Noise protocol.
• Experience in, and passion for, blockchain and decentralized technologies.

[Don’t worry if you don’t meet all of these criteria, we’d still love to hear from you anyway if you think you’d be a great fit for this role. Just explain to us why in your cover letter].

Hiring process

• Interview with our People Ops team
• Interview with Waku Research Lead
• Pair programming with Waku Team member on take home task
• Interview with Chat/App Protocol Team Lead and Status App Lead
• Interview with Waku Lead

The steps may change along the way if we see it makes sense to adapt the interview stages, so please consider the above as a guideline.

Compensation

The expected compensation range for this role is $120,000 - $150,000 (negotiable, dependent on how we assess your skills and experience throughout our interview process). We are happy to pay in any mix of fiat/crypto.

Time zones: GMT (UTC +0), CET (UTC +1), EET (UTC +2), MSK (UTC +3), CEST (UTC +2), BST (UTC +1), JST (UTC +9), CST (UTC +8), WIB (UTC +7), MMT (UTC +6:30), BST (UTC +6), NPT (UTC +5:45), IST (UTC +5:30), UZT (UTC +5), IRDT (UTC +4:30), GST (UTC +4), WAT (UTC +1), SAST (UTC +2), EAT (UTC +3)

Please record a short 3-5 minute Loom video introducing yourself, walking through some code you’ve written recently and explaining why you’re a great fit for the role. Don’t forget to include the link with your application :-)

**

Checkout Page makes it easy for businesses to sell online with our flexible no-code checkout page builder.

We’re a small, fully remote team of four: two co-founders, an SEO content writer and a customer support person.

We value a calm and stress-free work environment, focusing on growing our company and helping our customers succeed.

We're profitable and we’ve recently received funding from the TinySeed accelerator program, allowing us to grow our team.

The role

We’re looking for an experienced full-stack javascript developer to help us build new features, maintain existing features, fix bugs and scale our tech stack as we grow.

As an early team member, you have the chance to shape our codebase, build features from start to finish and work across the entire stack. You’ll be our first developer hire and will be working directly with the co-founders.

Checkout Page is built on top of Stripe Connect. You’ll regularly work with Stripe APIs.

Being a payments platform, stability is extremely important to us and to our customers. We do a lot of manual testing, QA and write tests with Jest.

Our stack:

• Frontend: React, Tailwind
• Backend: NodeJS, Koa, MongoDB
• Marketing site: NextJS, Sanity CMS

Your main tasks will include:

• Build new features from start to finish
• Work on UI/UX improvements
• Write test code to ensure stability
• Fix bugs

Since we’re a small startup, we need someone ready to take full ownership of the role, learn the codebase quickly, and start contributing from day one.

**

• At least 3 years of full-stack software development experience
• Proficient in React, NodeJS and MongoDB
• Ability to implement features across the stack
• Good written and spoken English skills
• Your own equipment, including: 
  • A MacBook
  • A quiet workspace
  • Fast and reliable internet connection

Hours

This is a full-time contract role, 5 days a week.

Our team is based in Europe (GMT+0) and South East Asia (GMT+8). You need to have overlap with both, thus we can not hire anyone based in the Americas.

Tools you’ll be using

• Cursor
• Github
• Stripe
• Sentry
• Notion
• Slack
• Loom

Interview process

• Submit a 3-5 minute Loom video introducing yourself, walking through some code you’ve written recently and explaining why you’re a great fit for the role.
• Join a 30-minute call with the co-founders.
• Complete a 3-day paid trial to show your skills in action.

If this sounds like a good fit, we'd love to hear from you!

We are BOB, a hybrid L2 to build and launch Bitcoin applications. Our mission is accelerating the world’s transition to a fair and transparent financial system through Bitcoin as a credibly neutral, global settlement asset. We believe in a world with access to finance for everyone, everywhere, in a secure and usable manner.

The role

As a Data Analyst for BOB, you will be leading the quantitative insights to grow and direct decisions at BOB. You are the main person responsible for analysing various on- and off-chain data sources to create and track KPIs and identify trends with a deep product understanding. You will work closely with the product, business, and marketing teams to formulate hypothesis and deliver actionable recommendations focussing on DeFi on BOB.

What you will do

• Product Metrics and Reporting: Track, analyse, and report on key performance metrics, including channel performance, user activation and retention, TVL, trading volume, and other KPIs.
• Market Research: Conduct in-depth market analysis to identify emerging trends within the Bitcoin and DeFi ecosystem.
• Identify DeFi Opportunities: Regularly prepare and update reports about investment opportunities on BOB for our institutional partners.
• Data Infrastructure: Together with the engineering team, design and build foundational data systems, including ETLs, dashboards, and analytics that drive data-driven decision-making and support scalable business growth.

Requirements

• Proven ability to lead complex analytical projects from concept to completion, especially in web3 environments.
• Advanced proficiency in SQL and Python through your experience as business or data analyst or other quant-related position.
• Deep understanding of DeFi, including protocols, block explorers, and data sources.
• Eagerness to improve products through fast experimentation, A/B testing, and a data-driven approach.
• Enjoy working in a results-driven and fast-paced startup environment.

Benefits

• Research-oriented team
• Solve novel problems
• Stock options
• Remote working
• 30-day vacation
• Allowance for a co-working space
• Yearly retreat

We are building BOB, a hybrid L2 that combines the best of Bitcoin and Ethereum. We seek an experienced Senior Cryptography Engineer to support the design, implementation, and launch of a novel BitVM bridge with Bitcoin security.

The role

You enjoy proactively identifying and resolving engineering problems by applying your knowledge on cryptographic techniques. You will lead the implementation and improvements around the cryptographic building blocks (SNARKs, Winternitz signatures, …) of the BitVM bridge. Working closely with the core team, you’ll contribute to research problems and be a trusted point of contact for improving BOB.

What you will do

• Architect and build the BOB Bitcoin bridge leveraging BitVM in close collaboration with the core team.
• Architect and build the BOB Bitcoin security infrastructure with Babylon in close collaboration with the core team.
• Engage in research discussions with the core team on the BOB core protocols.
• Share knowledge with other team members on cryptography and Bitcoin best practices.

Requirements

• Three years or more of hands-on Rust development experience.
• One year of experience of deploying protocols into production that leverage advanced cryptographic techniques (SNARKs, STARKS, MPC, …) with measurable TVL.
• Strong interest in Bitcoin, including Bitcoin script, BitVM, and Taproot.
• Excellent communication skills in a remote setting.

Nice to have

• Background in consensus protocols
• Experience with Solidity
• Contributions to open-source projects

Benefits

• Research-oriented team
• Solve novel problems
• Stock options
• Remote working
• 30-day vacation
• Allowance for a co-working space
• Yearly retreat

Time zones: EST (UTC -5), CST (UTC -6), MST (UTC -7), PST (UTC -8), ART (UTC -3), UTC -4, UTC -4:30, UTC -3, UTC -2, SBT (UTC +11), GMT (UTC +0), CET (UTC +1), EET (UTC +2), MSK (UTC +3), AST (UTC -4), FKST (UTC -3), NST (UTC -3:30), JST (UTC +9), CST (UTC +8), WIB (UTC +7), MMT (UTC +6:30), BST (UTC +6), NPT (UTC +5:45), IST (UTC +5:30), UZT (UTC +5), IRDT (UTC +4:30), GST (UTC +4), LINT (UTC +14), TOT (UTC +13), CHAST (UTC +12:45), LHST (UTC +10:30), AEST (UTC +10), ACST (UTC +9:30), ACWST (UTC +8:45), MART (UTC -9:30), NUT (UTC -11)

Are you a talented Senior Developer looking for a remote job that lets you show your skills and get decent compensation? Look no further than Lemon.io — the marketplace that connects you with hand-picked startups in the US and Europe.

What we offer:

• Earn $5k—$10,4k monthly: the rate depends on your seniority level, skills and experience. We've already paid out over $11M to our engineers.
• No more hunting for clients or negotiating rates — let us handle the business side of things so you can focus on what you do best.
• We'll manually find the best project for you according to your skills and preferences.
• Choose a schedule that works best for you. It’s possible to communicate async or minimally overlap within team working hours.
• We respect your seniority so you can expect no micromanagement or screen trackers.
• Communicate directly with the clients. Most of them have technical backgrounds. Sounds good, yeah?
• We will support you from the time you submit the application throughout all cooperation stages.
• Most of our projects involve working in a fast-paced startup environment. We hope you like it as much as we do.
• Through our community, we will connect you with the best developers from more than 50 countries.

Requirements:

• 4+ years of software development experience.
• 3+ years of commercial experience with Python.
• 3+ years of experience with Node.js.
• Hands-on experience with Next.js, React.js would be a plus.
• 3+ years of experience with AWS and TypeScript is a must.

• Strong technical skills: as a Senior Developer, you are expected to be able to create projects from scratch and have a deep understanding of application architecture.
• Clear and effective communication in English — advanced ability to discuss business tasks, justify decisions, and communicate issues. Good self-presentation is also essential for upcoming client calls.
• Strong self-organizational skills — ability to work full-time remotely with no supervision.
• Reliability — we want to trust you and expect that you won’t let us and the client down.
• Adaptability and Flexibility — the ability to onboard the project promptly after accepting it and start delivering results quickly.

Sounds good for you? Apply now and join the Lemon.io community!

**NOT YOUR TECH STACK?

We have different projects for Senior Developers, so if you have 4+ years of commercial experience in software development and you are fluent with React & Node.js, React & Python, AI Engineerning, Android & iOS, we would be happy to communicate and provide you with a project that matches your experience.  Just apply, and we will share more details with you.

If your experience matches our requirements, be ready for the next steps:

• VideoAsk — watch a short video about our startup, up to 10 minutes
• Complete your profile on our website
• 30-minute screening call
• Technical interview
• Feedback
• Magic Box (we are looking for the best project for you).

P.S. We work with developers from 50+ countries in different regions: Europe, LATAM, Asia (Philippines, Indonesia), Oceania (Australia, New Zealand, Papua New Guinea), Canada, and the UK. However, we have some exceptions.

At the moment, we don’t have a legal basis to accept applicants from the following countries:

• European: Iceland, Liechtenstein, Kosovo, Belarus, Russia, and Serbia.
• Latin America: Cuba and Nicaragua
• Most Asian countries and Africa.

We expand and shorten the list of exemptions regularly.

Do you represent a company with engineers who match the description and want to collaborate with us through staff augmentation? Then register here.

Time zones: SBT (UTC +11), GMT (UTC +0), MSK (UTC +3), CEST (UTC +2), BST (UTC +1), JST (UTC +9), CST (UTC +8), WIB (UTC +7), MMT (UTC +6:30), BST (UTC +6), NPT (UTC +5:45), IST (UTC +5:30), UZT (UTC +5), IRDT (UTC +4:30), GST (UTC +4)

**

We’re a small, ambitious startup backed by TinySeed, and we’re looking for a skilled Full-Stack Engineer with 3+ years of experience to join our team and help us scale.

As the second technical hire and fourth team member, you’ll join a small, ambitious team. You’ll collaborate with our co-founders and Senior Full-Stack Developer to enhance and expand our product.

Why BlueGamma?

🌟 True Ownership: Play a big role in building and scaling our platform, taking full ownership of features.

📊 Learn Finance: Work with complex financial data while gaining invaluable insights into interest rates and derivatvies pricing.

🤝 Collaborate with Founders: Partner closely with our co-founders to shape the product direction in a fast-paced, dynamic environment.

🏗️ Build for Scale: Be part of a 10x team aiming to become the #1 forecast provider for interest rates.

Location

📍 This is a remote role, but we are looking for candidates in time zones with significant overlap with London hours (GMT or ±3 hours) to ensure smooth collaboration.

🌟 While remote, you’ll have opportunities to visit our office at Sustainable Ventures—a vibrant co-working space dedicated to climate tech businesses, located near the London Eye.

Qualifications

• 📚 At least 3 years of experience as a Full-Stack Engineer or in a similar role.

Frontend Skills

• 🖥️ Strong experience building UIs with modern frontend frameworks, particularly React and Next.js.
• 🛠️ Proficiency in TypeScript and tools like React-Query.
• 🌐 Experience with Server-Side Rendering (SSR) for building performant web applications.

**

• 🐍 Expertise in Python, with experience using libraries like Pandas, Numpy, and Quantlib (or a willingness to learn).
• 📝 Proficiency in writing optimized and efficient SQL queries for relational databases like PostgreSQL.
• 🚀 Experience in building robust and scalable REST/Fast APIs.
• 🐳 Experience with containerization tools like Docker for developing and deploying applications.

**

• 🔢 Familiarity with basic financial concepts, such as interest rates and the time value of money.
• 📈 A willingness to learn about derivative pricing

**

• ☁️ Exposure to AWS services such as Lambda, RDS, EC2, S3, IAM, CloudWatch, and API Gateway is a bonus.
• 🌟 Open to learning cloud-based services and understanding their role in scaling applications effectively.

**

• 🧩 Proactive problem-solving abilities and a growth mindset.
• 💬 Excellent written and verbal communication skills.
• 🤝 A collaborative team player with a keen eye for detail when handling large data sets.

How to apply

Does this role sound like a good fit? Email us at [email protected]

• Include the role's title in your subject line.
• Send along links that best showcase the relevant things you've built and done.

Time zones: EST (UTC -5), CST (UTC -6), MST (UTC -7), PST (UTC -8), ART (UTC -3), UTC -4, UTC -4:30, UTC -3, UTC -2, SBT (UTC +11), GMT (UTC +0), CET (UTC +1), EET (UTC +2), MSK (UTC +3), AST (UTC -4), NST (UTC -3:30), JST (UTC +9), CST (UTC +8), WIB (UTC +7), MMT (UTC +6:30), BST (UTC +6), NPT (UTC +5:45), IST (UTC +5:30), UZT (UTC +5), IRDT (UTC +4:30), GST (UTC +4), LINT (UTC +14), TOT (UTC +13), CHAST (UTC +12:45), LHST (UTC +10:30), AEST (UTC +10), ACST (UTC +9:30), ACWST (UTC +8:45), MART (UTC -9:30), NUT (UTC -11)

Are you a talented Senior Developer looking for a remote job that lets you show your skills and get decent compensation? Look no further than Lemon.io — the marketplace that connects you with hand-picked startups in the US and Europe.

**

• Earn $5k—$8k monthly: the rate depends on your seniority level, skills and experience. We've already paid out over $11M to our engineers.
• No more hunting for clients or negotiating rates — let us handle the business side of things so you can focus on what you do best.
• We'll manually find the best project for you according to your skills and preferences.
• Choose a schedule that works best for you. It’s possible to communicate async or minimally overlap within team working hours.
• We respect your seniority so you can expect no micromanagement or screen trackers.
• Communicate directly with the clients. Most of them have technical backgrounds. Sounds good, yeah?
• We will support you from the time you submit the application throughout all cooperation stages.
• Most of our projects involve working in a fast-paced startup environment. We hope you like it as much as we do.
• Through our community, we will connect you with the best developers from more than 50 countries.

Requirements:

• 4+ years of software development experience.
• 3+ years of commercial experience with React.js.
• 4+ years of experience with Node.js.
• Hands-on experience with AWS, Next.js, TypeScript is a must.

• Strong technical skills: as a Senior Developer, you are expected to be able to create projects from scratch and have a deep understanding of application architecture.
• Clear and effective communication in English — advanced ability to discuss business tasks, justify decisions, and communicate issues. Good self-presentation is also essential for upcoming client calls.
• Strong self-organizational skills — ability to work full-time remotely with no supervision.
• Reliability — we want to trust you and expect that you won’t let us and the client down.
• Adaptability and Flexibility — the ability to onboard the project promptly after accepting it and start delivering results quickly.

Sounds good for you? Apply now and join the Lemon.io community!

**

We have different projects for Senior Developers, so if you have 4+ years of commercial experience in software development and you are fluent with Python & Node.js, React & Python, AI Engineering, Android & iOS we would be happy to communicate and provide you with a project that matches your experience. Just apply, and we will share more details with you.

If your experience matches our requirements, be ready for the next steps:

• VideoAsk — watch a short video about our startup, up to 10 minutes
• Complete your profile on our website
• 30-minute screening call
• Technical interview
• Feedback
• Magic Box (we are looking for the best project for you).

P.S. We work with developers from 50+ countries in different regions: Europe, LATAM, Asia (Philippines, Indonesia), Oceania (Australia, New Zealand, Papua New Guinea), Canada, and the UK. However, we have some exceptions.

At the moment, we don’t have a legal basis to accept applicants from the following countries:

• European: Iceland, Liechtenstein, Kosovo, Belarus, Russia, and Serbia.
• Latin America: Cuba and Nicaragua
• Most Asian countries and Africa.

We expand and shorten the list of exemptions regularly.

Do you represent a company with engineers who match the description and want to collaborate with us through staff augmentation? Then register here.

Arrakis is the leading non-custodial, onchain market making solution for protocols and DAOs. Our customers include Ether.fi, Maker, Stargate, Across, Lido, Karpatkey and other industry leaders.

We believe in a world where every organization, from a small startup to a large enterprise, will be tokenized and traded onchain. For this world, Arrakis is building the tools to create the necessary liquidity to enable this token economy to rival and out-compete the traditional financial industry.

DeFi is at risk itself of being overcome by centralised actors however. As Ethereum’s DeFi ecosystem has become more complex, sophisticated actors have extracted more and more value known as MEV. Arrakis is working on next generation solutions at the speartip of the MEV supply chain, such as HOT AMM, to protect LPs and token issuers against this value extraction.

As one of the Front End engineers at Arrakis, we’re looking for someone who is hands on but also has strong product thinking skills. Although shipping is important, this role entails more than writing lines of code. You’ll be involved in discovery work and ensuring that we build user-centred solutions that can scale.

What things will look like:

• You’ll be deeply involved in crafting delightful user experiences.
• You’ll play an instrumental role in architecting our systems, working with our current FE engineer, CTO (co-founder), back end engineers, smart contract developers and product manager.
• You’ll be heavily involved in product discovery work.
• We prioritise learning and shipping. We keep processes minimal.
• You won’t burn time in pointless meetings. We run a planning call on Mondays and do demos on Fridays. We have ad hoc working sessions and do daily async written updates.

Requirements

• Strong proficiency in React and Next.js ecosystems
• Hands on experience with Web3 technologies (wagmi, viem, Rainbowkit)
• Extensive experience with ReactQuery for efficient data fetching and state management
• Advanced knowledge of Typescript, including complex type definitions and best practices
• Expertise in modern CSS frameworks, particularly Tailwind CSS
• Demonstrated experience in monorepo architecture and management
• Strong understanding of CI/CD principles and experience implementing robust pipelines

Technologies we use and teach:

• React.js, Vue.js, Web3 Tooling, Typescript, GraphQl, NodeJS

Benefits

Join a small yet mighty team of industry veterans focused on revolutionizing crypto market making, collaborating with major projects like MakerDAO, Uniswap, Aave, Lido. You’ll work fully remotely with members spanning Zug, London, Paris, New York, Berlin, and San Francisco. Arrakis is backed by world-class investors including Uniswap Labs, Robot Ventures, Accel, Longhash, and more.

What we offer:

• Competitive salary
• SPICE token package
• Remote work
• Join amazing quarterly in-person offsites all over the world

The liquidity must flow…

About us:

Avara builds innovative products leveraging blockchain technologies. Avara’s suite includes the Aave app, unleashing the Aave Protocol and its native stablecoin GHO, Lens, an open social network, and Family, a design-first mobile crypto wallet. Avara’s vision is to build a people-powered internet that benefits all.

Our culture:

Having cultivated a thriving, collaborative culture, our team is kind, welcoming and passionate about what we are building. We celebrate differences and seek to develop and retain the most talented people from a erse candidate pool from all over the world. No matter where you are based, no ghost will be left behind and we appreciate every moment we get to work and have fun together.

About the Role:

Avara is looking for a staff Move engineer to innovate and build upon our various products and services. You should have a strong passion for web3 technology and an understanding of smart contract development and blockchain systems. In this role, you will be responsible for designing, implementing, and writing smart contracts in Move. You will also be interacting with smart contracts in solidity and other EVM based networks. You will work closely with the Avara leadership, product and technical teams.

How you can make an impact:

• Designing, crafting, and testing secure Move based code
• Participating in the development of protocol-level infrastructure and tools
• Collaborating with cross-functional teams to define, design, and ship new features and functionality
• Responding to security vulnerabilities, simulating the scenario, and evaluating a strategy and response
• Debugging and troubleshooting issues that arise during the development process
• Reviewing code written by other engineers to ensure it meets the required standards and specifications with a focus on security
• Staying up to date with developments in the web3 ecosystem and incorporating new technologies as appropriate
• Providing technical guidance, support, and mentoring to other engineers as needed

Let’s connect if:

• Extensive experience with Rust and/or Move
• You have previous experience and/or an adequate understanding of DeFi concepts such as tokens, minting, lending/borrowing, financial pools, staking and related concepts
• Previous experience in writing smart contracts (EVM, non-EVM chains) and profound understanding of contracts architecture, attack vectors, vulnerabilities and design patterns are very welcome
• Previous experience with decentralized financial oracles is very welcome
• You are someone who builds, innovates, and ships features with the highest standards
• You have expertise in Move and have high degree of comfort with advanced concepts
• You have experience with network and distributed systems programming in particular as a nice-to-have as well
• You research constantly and keep up with the latest hacks, tooling, and security practices
• Are passionate about DeFi and Social

Haven’t quite met all the criteria? Let’s not miss out on the chance to speak. Whilst you might not meet every single requirement, you might bring other, more exciting skills to the companies!

What we stand for:

• Craft — Seek excellence.
• Accountability — One for all. All for one.
• Integrity — Be true.
• Sisu — Dig deep.
• Community — We’re in it together.

Avara celebrates ersity and views each and every team member as a separate inidual with their own unique identity. No matter your race, religion, gender, ethnicity, age, disability, sexual orientation or even the wallet you use, we welcome you at Avara. As an equal opportunities employer, we take accountability and believe in everyone’s potential to build, create and inspire changes. With a mission to build a erse workforce, we are proud to foster a working environment in which everyone can feel safe and valued for who they are.

RISC Zero is looking to hire a RISC Zero College Program to join their team. This is a contract position that can be done remotely anywhere in the United States.

About Helius

Helius is a leading developer platform on the Solana blockchain, dedicated to inspiring and accelerating the creation of crypto-powered software. Our mission is to empower developers and businesses by providing them with the tools and resources they need to build the future of decentralized applications. We specialize in developing RPCs, indexers, webhooks, APIs, and more for the Solana ecosystem.

We’ve raised over $34M from Haun Ventures, Founders Fund, Foundation Capital, 6th Man Ventures, Reciprocal Ventures, Chapter One and angel investors including Solana co-founders Anatoly Yakovenko and Raj Gokal, and Balaji Srinivasan. Our team members have previously built mission-critical, scalable infrastructure at AWS, Coinbase, Stripe, Google, Digital Ocean, and more. Here is the Helius Manifesto so you know what to expect if you join Helius.  

Role Description

We are looking for a Senior Backend/Infrastructure Engineer with experience in building and scaling distributed systems to join our growing team. If you have a passion for blockchain technology and a high sense of ownership, we’d love to hear from you!

Responsibilities:

• Design, implement, and maintain scalable and reliable backend infrastructure to support our growing suite of developer tools and services
• Collaborate with cross-functional teams to ensure seamless integration of infrastructure components with existing systems
• Identify bottlenecks and optimize performance of our services to handle increasing traffic and load
• Develop monitoring and alerting systems to maintain high levels of system availability and performance
• Continuously improve system architecture, security, and best practices to stay up-to-date with industry standards
• Mentor and support other team members in understanding and implementing complex technical concepts

Requirements:

• 3+ years of experience in backend development and infrastructure engineering, with a focus on distributed systems
• Strong understanding of blockchain technology, particularly the Solana ecosystem
• Proficient in programming languages such as Rust, Go, and Typescript
• Experience with cloud computing platforms (AWS, GCP, Azure) and containerization technologies (Docker, Kubernetes)
• Knowledge of database technologies (SQL, NoSQL) and data processing frameworks (Apache Kafka, RabbitMQ)
• Strong problem-solving and analytical skills, with the ability to adapt to new technologies quickly
• Excellent communication and collaboration skills, with a high degree of ownership and agency

What We Offer

• Competitive salary and equity package
• Flexible work hours and remote-friendly environment
• Generous vacation and time-off policy
• Opportunities for personal and professional growth in a fast-paced, dynamic industry

Helius is an equal opportunity employer.

About Helius

Helius is a leading developer platform on the Solana blockchain, dedicated to inspiring and accelerating the creation of crypto-powered software. Our mission is to empower developers and businesses by providing them with the tools and resources they need to build the future of decentralized applications. We specialize in developing RPCs, indexers, webhooks, APIs, and more for the Solana ecosystem.

We’ve raised over $34M from Haun Ventures, Founders Fund, Foundation Capital, 6th Man Ventures, Reciprocal Ventures, Chapter One and angel investors including Solana co-founders Anatoly Yakovenko and Raj Gokal, and Balaji Srinivasan. Our team members have previously built mission-critical, scalable infrastructure at AWS, Coinbase, Stripe, Google, Digital Ocean, and more. Here is the elius Manifesto so you know what to expect if you join Helius.  

Role Description

We are looking for a Principal Engineer to help found our Platform Engineering Team. You will be responsible for building the internal developer platform and accelerating our engineering team. Your work will involve scaling our host & software management solutions to support thousands of bare-metal servers, including our Solana validator(s) and our RPC fleet. You will build service frameworks which provision and manage globally distributed services, ensuring high-reliability and uptime as they handle billions of customer requests per day.

If you have a passion for blockchain technology and a strong sense of ownership, we’d love to hear from you!

Responsibilities

• Design, implement, and manage automated systems for deploying, monitoring, and maintaining our bare-metal servers and services.
• Develop and maintain CI/CD pipelines to streamline the deployment process.
• Enhance the security of our infrastructure and networks by implementing best practices and proactive measures.
• Monitor system performance, identify and resolve issues to ensure high availability and reliability.
• Lead incident response and root cause analysis for system outages and issues.
• Implement robust security measures to safeguard sensitive data and protect against cyber threats and attacks.
• Collaborate with the engineering team to optimize performance and scalability of our services.
• Establish and enforce policies and procedures to ensure compliance with industry standards and regulations.

Requirements

• A minimum of 8 years of experience in a DevOps or Site Reliability Engineering role, preferably in a high-performance, low latency environment.
• Experience managing and optimizing bare-metal server environments.
• Expert scripting and programming skills (e.g., Bash, Python, Go).
• Experience in Rust, Golang, Java, or a similar language.
• Proficiency with monitoring and logging tools (e.g., Prometheus, Grafana, ELK stack).
• Strong knowledge of automation tools and frameworks (e.g., Ansible, Terraform, Puppet, Chef).
• Expertise in CI/CD tools and practices (e.g., Jenkins, GitLab CI, CircleCI).
• Excellent problem-solving skills and the ability to troubleshoot complex issues.
• Strong communication skills and the ability to collaborate effectively with cross-functional teams.
• Ability to work independently and take ownership of projects from start to finish.

Preferred Qualifications

• Experience with blockchain technologies, particularly Solana.
• Prior experience in a startup or fast-paced environment.

What We Offer

• Competitive salary and equity package
• Flexible work hours and remote-friendly environment
• Generous vacation and time-off policy
• Opportunities for personal and professional growth in a fast-paced, dynamic industry

Helius is an equal opportunity employer.

About Vac

public good protocols for the decentralized web. We do applied research based on which we build protocols, libraries and publications.

The role

We are seeking a skilled and passionate Software Developer in Test with experience in Low Level Programming to join our Vac QA team. As a Test Automation Engineer, you will play a crucial role in ensuring the reliability, performance, and scalability of distributed systems within Vac and the IFT.

Your responsibilities will include automating comprehensive test plans, as well as contributing to the identification and resolution of complex issues. Leveraging your expertise in programming and systems knowledge, you will help validating the functionality of distributed systems.

Key responsibilities

• Implement (Nim, Rust, TS, Python), and maintain integration tests in collaboration with other QAs and Devs.
• Execute and automate test plans, test cases, and test scripts to validate the functionality, performance, and scalability of distributed systems.
• Identify, reproduce, and debug complex issues in distributed systems, working closely with Logos development teams.
• Work with Docker, Kubernetes, and POSIX-like systems.
• Create and maintain scalable test automation frameworks.
• Integrate automated tests into CI pipelines using tools like Github Actions.

You ideally will have

• Solid experience with systems programming languages like Rust, Nim, Go.
• Working knowledge of Docker, Kubernetes, and POSIX-like systems.
• Experience with scripting languages like Python.
• Knowledge of tests automation tools, best practices and design patterns.
• Excellent written and conversational communication skills.
• Alignment with our core values and principles.

Bonus points

• Experience with off-the-shelf networking stacks such as libp2p.
• Experience in blockchain technology.
• Experience working for an open-source organization.
• Experience with desktop UI automation.

[Don’t worry if you don’t meet all of these criteria, we’d still love to hear from you anyway if you think you’d be a great fit for this role. Just explain to us why in your cover letter].

Hiring process

The hiring process for this role will be:

1. Interview with our POps team
2. Interview with team member from the Vac QA team
3. Take home assignment & interview with team member from the Vac QA team
4. Interview with Vac team lead

The steps may change along the way if we see it makes sense to adapt the interview stages, so please consider the above as a guideline.

Compensation

The expected compensation range for this role is negotiable, dependent on how we assess your skills and experience throughout our interview process. We are happy to pay in any mix of fiat/crypto.

About us

Re7 Capital is a London-based cryptoasset investment firm, utilising our deep crypto network and proprietary data infrastructure to drive investment decisions for a number of DeFi and alpha strategies. We also work with leading projects and blockchains to design their DeFi ecosystem, provide on-chain risk curation and vault management services through Re7 Labs. Re7 has a dynamic team with a strong background in investment management, data science and crypto.

The role

To support the continued expansion of the firm, we are seeking a motivated DeFi Developer to join our team. Reporting directly to the Head of Technology, you will take full ownership of our hedging bot, which ensures delta neutrality by managing deposits into AMM protocols and shorting equivalent long exposures on perpetual exchanges.

Responsibilities

• Assess and enhance the existing hedging infrastructure e.g. by developing a new bot from scratch.
• Maintain the hedging bot by integrating new connectors for interacting with various AMM protocols across EVM and non-EVM networks.
• Identify, debug, and test code issues to ensure stability and efficiency.
• Backtest strategies to analyze performance and adjust rebalancing thresholds based on market volatility.
• Develop and maintain a live reporting system to monitor performance metrics and provide actionable insights.

Requirements

• Proficiency in Python.
• Experience with one of the main smart contract languages eg Solidity or Move.
• Experience with algorithmic trading.
• Strong background in data analysis and backtesting trading strategies.
• Proficiency in SQL databases, GraphQL sources, and handling time-series data.
• Familiarity with TypeScript, Rust.
• In-depth understanding of major DeFi AMMs(e.g., Curve, Uniswap V2/V3, Aerodrome).
• Familiarity with Linux environments and Git version control.

Benefits

• A dynamic and collaborative work environment
• Opportunities for professional growth and development in a rapidly evolving and dynamic industry
• Remote-first set up with opportunities to meet with the team in person
• Competitive package

Application process

• Your resume.
• A cover letter detailing your interest in the role.
• Your response to the following challenge:
  • Create a high-level logic description and workflow chart for a trading bot that hedges impermanent loss on a Uniswap V2 ETH/USDC pool using perpetuals on Binance. Include a backtest of your strategy.

**

• Design, develop, and maintain scalable data pipelines and workflows to ingest, transform, and store large datasets.
• Collaborate with data scientists, analysts, and software engineers to understand data needs and deliver effective solutions.
• Optimize and enhance existing data processes for performance, scalability, and cost-efficiency.
• Implement data quality checks, validation, and monitoring to ensure data accuracy and reliability.
• Develop and manage data warehouses, databases, and other storage solutions.
• Ensure compliance with data governance and security policies.
• Stay up-to-date with emerging technologies and best practices in data engineering and apply them as appropriate.

An Ideal Candidate Should Have

• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
• Proven experience as a Data Engineer or in a similar role and experience with ETL.
• Proficiency in programming languages such as Python and experience in SQL
• Big data tools: Data- and Delta-lakes
• Cloud: Bare-Metal, Hybrid infrastructure

**

• Experience working with media files (transformations)
• Torch dataset experience

**

• Actively shipping production code for the Speechify iOS app
• Work within a dedicated product team
• Participate in product discussions to shape the product roadmap
• Maintain and enhance the existing complex app architecture
• Have the opportunity to work on features that will change millions lives 

**

• Experience. You've worked on products that scaled to a large user base
• Track record. You have worked on various products from inception to decent traction. You have been responsible for engineering the product.
• Customer obsession. We expect every team member whose responsibilities directly impact customers to be constantly obsessed about providing the best possible experience
• Product thinking. You make thoughtful decisions about the evolution of your product and support PMs and designers into taking the right direction
• Speed. You work quickly to generate ideas and know how to decide which things can ship now and what things need time
• Focus. We’re a high-growth startup with a busy, remote team. You know how and when to engage or be heads down
• Technical skills. Swift, RXSwift, programmatic UI, strong knowledge in architectural patterns, multi-threading, (bonus) Combine, UiKit, & SwiftUI

**

• Swift Programming Language (min. 2 years)
• SwiftUI experience (1 year)
• Core Data/Realm/firebase/GRDB work experience
• Experience in a Multithreading Programming
• You must be able to describe Imperative and Declarative Programming differences, functional reactive VS OOP, key pros and cons
• Working with CI/CD infrastructure
• Experience with Fastlane
• Architectural Pattern knowledge like MVVM and MVVM+C and experience in practice min. 2 years
• Experience with Functional Reactive Programming min 2 years - fluent with RxSwift && RxCocoa || Combine
• Knowledge of Programming Paradigms 
• SOLID principles, ability to write every single class according to SOLID
• Experience with Git and understanding of different Git strategies
• Experience with APNS and Push Notifications
• XCTests practical experience
• You should be able to:
  • Describe disadvantages of OOP
  • Write fully protocol oriented classes in Swift
  • Must know who is Uncle Bob, Martin Fowler, Alan Key and how they've contributed to the field

**

We're looking to hire for our Data Acquisition side of our AI team at Speechify. This role is responsible for all aspects of data collection to support our model training operations. We are able to build high-quality datasets at petabyte-scale and low cost through a tight integration of infrastructure, engineering, and research work. We are looking for a skilled Senior Software Engineer to join us.

**

• Be scrappy to find new sources of audio data and bring it into our ingestion pipeline
• Operate and extend the cloud infrastructure for our ingestion pipeline, currently running on GCP and managed with Terraform.
• Collaborate closely with our Scientists to shift the cost/throughput/quality frontier, delivering richer data at bigger scale and lower cost to power our next-generation models.
• Collaborate with others on the AI Team and Speechify Leadership to craft the AI Team’s dataset roadmap to power Speechify’s next-generation consumer and enterprise products.

**

• BS/MS/PhD in Computer Science or a related field.
• 5+ years of industry experience in software development.
• Proficiency with bash/Python scripting in Linux environments
• Proficiency in Docker and Infrastructure-as-Code concepts and professional experience with at least one major Cloud Provider (we use GCP)
• Experience with web crawlers, large-scale data processing workflows is a plus
• Ability to handle multiple tasks and adapt to changing priorities.
• Strong communication skills, both written and verbal.

**

• A fast-growing environment where you can help shape the company and product.
• An entrepreneurial-minded team that supports risk, intuition, and hustle.
• A hands-off management approach so you can focus and do your best work.
• An opportunity to make a big impact in a transformative industry.
• Competitive salaries, a friendly and laid-back atmosphere, and a commitment to building a great asynchronous culture.
• Opportunity to work on a life-changing product that millions of people use.
• Build products that directly impact and support people with learning differences like dyslexia, ADD, low vision, concussions, autism, and more.
• Work in one of the fastest-growing sectors of tech, the intersection of artificial intelligence and audio.

What We Offer

• A dynamic environment where your contributions shape the company and its products.
• A team that values innovation, intuition, and drive.
• Autonomy, fostering focus and creativity.
• The opportunity to have a significant impact in a revolutionary industry.
• Competitive compensation, a welcoming atmosphere, and a commitment to an exceptional asynchronous work culture.
• The privilege of working on a product that changes lives, particularly for those with learning differences like dyslexia, ADD, and more.
• An active role at the intersection of artificial intelligence and audio – a rapidly evolving tech domain.

"

TaxGPT is revolutionizing the tax and accounting space with AI-driven solutions tailored for accountants, tax professionals, and SMBs. We're building an AI co-pilot to transform tax workflows, drive efficiency, and simplify compliance.

* End-to-End System Design: Lead the design, development, and deployment of scalable software solutions. This includes architecting frontend components in NextJS, developing business logic in Django, managing data interactions, and integrating APIs.

Ideal Candidate:

* Self-starter who thrives in ambiguity and can envision successful outcomes

",

What We Are Looking For

Hume is looking for an experienced DevOps Engineer to build and maintain scalable, secure, and efficient infrastructure for deploying applications, services, and AI/ML models.

You will work closely with Hume’s creative and engineering teams to streamline deployments, manage cloud environments, and ensure high system availability and performance.

We want to create artists that feel alive and are truly creative. You should love the intersection of art and technology. This is your opportunity to work with a company building something truly unique at that intersection.

Our current virtual artists have millions of streams on Spotify and generate millions of views on Instagram/TikTok.

Cloud Infrastructure Management

• Design, implement, and manage scalable cloud environments (GCP experience preferred) for deploying applications, services, and AI/ML models.
• Optimize cloud resources for cost efficiency while maintaining high availability and fault tolerance.
• Implement cloud-native solutions using services such as GCE, API Gateway, Cloud Run, and Kubernetes.

CI/CD Pipeline Development

• Build and maintain robust CI/CD pipelines to automate the testing, deployment, and scaling of machine learning models and full-stack applications.
• Ensure smooth integration of code from multiple teams (ML, backend, frontend) through automated pipelines and version control systems (Git).
• Automate infrastructure provisioning using tools like Terraform or CloudFormation

Monitoring and Incident Management

• Set up monitoring, logging, and alerting solutions using tools like Prometheus, Grafana, ELK Stack, or Datadog.
• Implement automated health checks, error tracking, and incident response processes to ensure system reliability.
• Conduct root cause analysis (RCA) for incidents and implement long-term solutions to prevent recurrence.

Security and Compliance

• Ensure system security through best practices, including setting up firewalls, encryption, and access control mechanisms.
• Implement DevSecOps practices, including vulnerability scanning and automated security testing in CI/CD pipelines.
• Maintain compliance with industry standards and regulations.

What We’re Looking For

• 3+ years of experience as a DevOps Engineer or similar role.
• Excellent problem-solving skills and a proactive approach to identifying and resolving issues.
• Strong communication skills, with the ability to collaborate effectively across teams.
• 2+ years of experience for senior designing and developing online and production grade ML systems.
• Bonus Points: Startup experience - someone who thrives in a fast paced environment, can e into the weeds and take full ownership of workflows from end to end.
• Bonus Points: Knowledge of Web3 tech and decentralized systems

$110,000 - $130,000 a year

The actual annual salary paid for this position will be based on several factors, including but not limited to, skills, prior experiences, training, company needs, and current market demands. The annual salary range for this position is subject to change and may be adjusted in the future. This position may also be eligible for salary increases, bonuses, equity awards, and benefits.

About Buoy SoftwareOur mission is to deliver the best experience possible to as many donors of blood products (such as plasma) as possible, in as many communities as possible. We use our understanding of blood product donation and the industry’s regulations and pair them with our extensive consumer product experience to enrich the lives of our members and improve health outcomes for patients everywhere. In an industry that hasn’t seen innovation in more than two decades, Buoy’s software streamlines the donation process allowing our business to promote loyalty while improving efficiency in a donation center. In turn, the increase in blood product donations improves a supply level that is at an all time low, and allows for blood-product derived biotherapies to continue to evolve, improve, and save lives for those who face life-threatening conditions (i.e. immune deficiencies and blood disorders). Without an increase in blood product donations, we are facing a worldwide health crisis that ultimately results in rationing of care without the proper resources. Buoy Software is excited to be playing more of a role in improving the state of blood products and blood product donations.We’re working alongside Join Parachute (www.joinparachute.com/) in the opening of small market donation centers across the country that will create local donation center careers, opportunities to donate blood products, and provide financial compensation for those donations that will have a positive economic impact in those communities. The need for blood products is growing rapidly. We want to close the gap in blood product supply and demand by empowering organizations with the right tools. Buoy is the intuitive, data-driven mobile application for donors.About The RoleWe're looking for a Security and Risk Engineer to join our team. You should be someone who is comfortable and experienced in risk management and code review. This role will work closely with specific product engineering pods, owning all security controls and documentation for assigned pods. You should have an eye for continuous improvement, risk and vulnerability management, and security compliance.What you’ll do:* Oversee vulnerability and security risk management including, but not limited to, vulnerability and risk identification/assessment, crafting mitigation proposals, tracking mitigation status, and testing and validating mitigation methods* Oversee security compliance activities including, but not limited to, hazard analyses, threat modeling, root cause analysis, and creating, updating, and maintaining policies and other relevant documentation* Manage continuous monitoring and auditing processes to detect and respond to security incidents* Perform code assessments to determine any impacts for Buoy’s applications* Responsible for defining, implementing, evaluating, and maintaining the effectiveness of security and risk controls* Identify current and emerging issues including security trends, vulnerabilities, and threats* Collaborate with team members and stakeholders on projects and audits* Design security controls that increase operational efficiency and reduces the likelihood of control failure* Perform third party security assessments* Educate and train staff on security best practicesWho you are: * You have experience with threat modeling analysis such as STRIDE and Attack Tree methodologies.* You have experience with software as a service.* You are a self starter. You enjoy working in an environment where you have a lot of autonomy. You are not one to wait around to be given work, but are always looking for ways in which you can provide support for your colleagues.* You can adapt to change quickly and thrive in an environment where every day is different / you own a variety of tasks.* You are a team player. Everyone contributes within the Buoy team, and you want to help the team get the job done when needed, regardless of initial ownership.* You are professional in your collaboration and communication methods. You can represent Buoy and our values both internally and externally (with vendors / partners) as needed.In the first 30 days, you will…* Be introduced to the team - we’ll help you start to get to know your colleagues, point of contacts for various scenarios, understanding dynamics within the broader org.* Learn how Buoy Software operates internally - we’ll help you get accustomed to Buoy’s process, engineering terminology, and other cultural aspects of working here.* Go through product demos to start to understand Buoy Software and how it works for both donors experience and donor processing.* Begin meeting with and getting to know your direct manager who will share various projects and goals for this role to provide guidance as you settle into the position.* Review existing security documentation and determine gaps or improvements.* Hit the ground running!In the first 60 days, you will…* Understand goals for your respective pods over the next 6 - 12 months.* Begin implementing solutions for gaps identified and performing all duties related to continuous management of security for your pods.* Become more familiar with workflows and processes.* Become more autonomous as you work with your pods and other stakeholders.* Start to define timelines for various projects with your manager to help prioritize your focus and align them with the goals for this role.* Begin to suggest changes and improvements to the security program and/or internal processes.In the first 90 days, you will…* Meet with stakeholders across the broader Buoy Software organization.* Become more familiar with the other departments across Buoy Software (including leadership, support, customer success, marketing, and people ops).$120,000 - $140,000 a yearWhere you'll beWe are fully remote. We deeply believe in distributed teams at Buoy. We build projects around motivated iniduals. We give our team the environment, support and trust they need to get the job done. We are only considering candidates currently based in the United States at this time. ---Employment at Buoy Software is contingent upon achievement of satisfactory results on your background check and reference check and your ability to provide proof of your identity and eligibility to accept employment in the United States. #Salary and compensation

bloXroute is looking to hire a Technical Support Manager to join their team. This is a full-time position that can be done remotely anywhere in EU timezone.

Bugcrowd is hiring a remote Security Engineer. This is a full-time position that can be done remotely anywhere in the United States.

Bugcrowd - The world's #1 crowdsourced security company.

🧠 Principal Engineer @ Ideaflow - Build Humanity's Collective Brain

Imagine the world's lowest-friction thought-capture system meets Figma-for-knowledge-graphs. Imagine Obsidian, but maintained by AI and massively collaborative. Our mission: build the ultimate personal knowledge management system that evolves into humanity's collective brain. Backed by $10M+ from Naval, Palantir co-founder, First Round Capital, and featured in ProductHunt Weekly Highlight. Rapidly growing product adoption.

Seeking: senior full stack engineer, iOS engineer for high-energy roles

The Challenge ⚡

• Building an offline-first, real-time collaborative notebook

• Making knowledge graphs & LLMs feel magical

• Creating the smoothest note-taking experience ever

• Making collaborative intelligence feel like a superpower

You'll Love This If 💫

• You're obsessed with performance & user experience

• You've built real-time collaborative features

• React & TypeScript make you happy

• You have Strong Opinions™ about note-taking apps

Why It's Cool 🚀

• Small, technical team shipping meaningful products

• SF-based + remote, flexible work style, care about holistic wellness

• Competitive salary + equity that matters

Salary and compensation

Benefits

🌎 Distributed team

⏰ Async

🤓 Vision insurance

🦷 Dental insurance

🚑 Medical insurance

🏖 Unlimited vacation

🏖 Paid time off

🏔 Company retreats

🧘 Mental wellness budget

Time zones: EST (UTC -5), CST (UTC -6), MST (UTC -7), PST (UTC -8), AKST (UTC -9), HST (UTC -10)

**About the Position

A Staff Software Engineer is primarily responsible for developing, maintaining, and orchestrating various Backend components, ensuring feature delivery aligns with technical standards and project timelines while prioritizing product stability. Acting as a senior inidual contributor on their team, they take ownership of complex projects, lead technical direction, and mentor peers through code reviews, paired programming, and refinement sessions. You’ll also be the designated Tech Lead for the team, taking on additional team responsibilities which include, but are not limited to, upholding high-quality coding standards, overseeing ticket and documentation processes, and collaborating with Product Management to prioritize work, manage tech debt, and drive engineering improvements. They also plan sprints and advocate for initiatives, including, but not limited to, performance optimizations, re-architecting efforts, or infrastructure improvements.

Note: At Murmuration, we are committed to becoming an even more erse, equitable, and inclusive workplace. To this end, all staff members are expected to actively participate in DEIB (ersity, equity, inclusion, belonging) programming.

Job Level: IC 5

What You’ll Do:

• Develop software aligned with specifications & designs, ensuring code is well-tested, maintainable, and documented;
• Work autonomously with minimal oversight, delivering production-ready solutions that prioritize long-term maintainability and supportability;
• Act as a Subject Matter Expert for your team's product, contributing to complex algorithmic tasks, feature designs, and broader technical standards;
• Create, communicate, and defend design decisions to your team and the broader engineering organization through demo sessions, chapter meetings, and architecture reviews;
• Take ownership of Jira epics or large tasks, driving them to completion and demonstrating work to ensure requirements are met;
• Manage builds, releases, and change log creation while adapting development efforts to align with the team's SDLC;
• Oversee engineering briefs, review architectural design documents, and maintain a customer-centric approach while supporting team members through regular check-ins and feedback;
• Mentor engineers through facilitating pull-request reviews for your team, paired programming sessions, and technical guidance on design & best practices; and
• Be the team’s designated Tech-Lead, which includes the following responsibilities:
• Collaborate with Product to refine Jira tasks, estimate effort for development activities, and align Pod priorities with roadmap timelines;
• Oversee Jira standards for the team’s work, ensuring work is scoped properly with clear & tangible acceptance criteria;
• Identify and document technical debt, translating it into actionable tickets for review; and
• Oversee and review Pod technical work, ensuring feature stability and adherence to the application’s architecture.

Requirements

• 10 - 15 years’ experience;
• BS, BA in Computer Science or other related degree (boot camp(s) and/or work experience can be substituted for degree requirements);
• Mastery in Typescript/Javascript or a similar functional programming language which isn’t strongly typed, including understanding threading or multi-processing for the given language;
• Working knowledge of AWS Lambdas or AWS Fargate;
• Mastery of a standard IDE for code development;
• Familiarity with a standard code repository (e.g., git);
• Familiarity with the standard package manager used by Node;
• Demonstrated proficiency on how to deploy the framework;
• Familiarity with one CI/CD framework;
• Experience designing and developing product features from design to production deployment;
• Previous experience supporting a production environment;
• Ability to demonstrate good communication skills, including the ability to clearly and adequately in order to define a position and defend it (in writing or verbally);
• Ability to document a design, component, or workflow they have working knowledge of; and
• Ability to create and design technical workflows and break that larger project into smaller workable components.

Nice to Haves:

• Demonstrable knowledge in the creation, use, and support of GraphQL in a production environment;
• Demonstrable knowledge in the creation, use, and support of a document database like MongoDB;
• Advanced experience with CI/CD platforms & best practices;
• Additional experience with other AWS products, such as S3, IAM, System & Secrets Manager, Elastic Container Registry, Event Bridge, and API Gateway;
• Experience with container technologies, such as Docker or Kubernetes; and/or
• Experience with IaC technologies, such as AWS CDK or Terraform.

Talented Staff Software Engineers come from all walks of life and career. If you are passionate about civic engagement and technology, please apply, even if you do not check every box!

**Benefits

**Location and Compensation

The Staff Software Engineer is a full-time, salaried position with a comprehensive benefits package (more detail below). It is based anywhere in the U.S. The starting salary range for this position is $135,000 - $165,000 and is commensurate with experience.

**Our Culture of Care

We work hard to create a culture of care to ensure that our staff are best equipped to lead happy, healthy, and balanced lives. To that end, we offer a comprehensive benefits package which includes:

• Health, vision, and dental insurance with 100% of premiums covered for you and qualifying family members;
• Retirement benefits with a 5% employer match;
• A flexible unlimited PTO plan;
• Generous paid parental leave;
• Pre-tax commuter benefits;
• A company laptop;
• A flexible remote work environment;
• A home office setup stipend for all new employees;
• Monthly reimbursement for remote work expenses;
• A yearly professional development fund;
• Mental health and wellness benefits through Calm and Better Help; 
• Yearly in-person staff retreats; and
• A welcoming culture that celebrates ersity, equity, inclusion, and belonging.

**An Equal-Opportunity Employer with a Commitment to Diversity

Murmuration is proud to be an equal opportunity employer, and as an organization committed to ersity and the perspective of all voices, we consider applicants equally of race, gender, color, sexual orientation, religion, marital status, disability, political affiliation and national origin. We reasonably accommodate staff members and/or applicants with disabilities, provided they are otherwise able to perform the essential functions of the job.

Note: Murmuration is two organizations working together to pursue our mission of amplifying the power of civic engagement: Murmuration Research Institute, a 501(c)(3) that conducts research to identify, design, and create the data, tools, and insights that build healthier and more equitable communities; and Murmuration, Inc., a 501(c)(4) that supports organizations working across the country on the nation’s most challenging issues with access to data, tools, and research that build healthier and more equitable communities.