We’re looking for an Internet of Things Technical Lead with experience leading projects and collaborating closely with product owners.

In this role, you’ll be joining our team as a senior developer eager to find cost-effective, high-quality, pragmatic solutions to our clients' complex problems. You might identify as a Technical Lead, a Technical Architect, or a Technical Program Manager, and — as you might expect with “technical” in the title — you would be the person on the project team most responsible for delivering the most appropriate and cost-effective technical solution for the client’s needs.

Responsibilities will include:

• Crafting technical architecture plans through interfacing with clients to understand product requirements
• Planning development work with your team through scoping and estimation
• Developing and optimizing technical solutions while keeping in mind performance, scalability, maintainability, and cost-effectiveness
• Participating in code reviews, providing constructive feedback to teammates and ensuring adherence to best practices
• Contributing to project success by keeping a close eye on team velocity, project scope, budget, and timeline
• Negotiating with clients to align project scope with budget and timeline, if needed

The person we’re looking for is happy, relaxed and easy to get along with. They’re flexible on anything except conceits that will lower their usually outstanding work quality. They work “smart”, by carefully managing their workflow and staggering features that have dependencies intelligently — they prefer deep work but are OK coming up to the surface now and then for top level / strategic conversations.

We believe people with backgrounds or interests in design, art, music, food or fashion tend to have a well rounded sense of design & quality — so a variety of hobbies or side projects is a big nice to have!

Salary and compensation

"

Gander is building the next generation of AI technology for the aviation industry (usegander.com), starting in business and general aviation. Our products help aviation operators coordinate maintenance, fleet availability, airport operations, and crew scheduling. We are looking for rockstar interns (2-3) to join us for an immediate start (End of Feb ‘25) and continue on through the summer or convert to a full-time role upon graduation.

Interns at Gander will get to be at the bleeding edge of applying the latest AI technologies to the aviation industry (desktop agents, multi-model LLMs, and more) and get the opportunity to work hands on with aircraft operators. The team is small & based in NYC, however we are planning on several in-person sprints at customer sites and/or locations around the country to bring team members including interns not based in NYC together.

Job Responsibilities:

* Create Great Software: Take product requirements and turn them into beautiful, reliable, and high quality software and multiply your impact with code gen tools

Key Requirements

* Evidence of End-End Product Ownership: Experience building highly technical and/or well-designed personal projects

",

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:

• 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.
• 3+ years of commercial experience with Python.
• Hands-on experience with Next.js, PostgreSQL, Node.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 AI Engineering, DevOps, 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, the U.S. ., Canada, Asia (Philippines, Indonesia), Oceania (Australia, New Zealand, Papua New Guinea), and the 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.

We do not provide visa assistance, and our cooperation model does not include the benefits typically offered with direct hire.

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

About us

Seats.io is a team of 6 people building best-in-class reserved seating for online ticketing. We grew from a hobby project into a healthy B2B scaleup with 600+ customers across the globe. Every month, over 5M seats are booked through our interactive floor plans.

We like:

✅ Solving hard problems and having a laugh

What you’ll be doing

Same as the rest of the team: building a kick-ass product. You’ll champion your own features and help others with theirs.

From day one, and in no particular order, you will:

👉 talk to users to understand their needs

If you love crafting intuitive, high-performance interfaces for complex tools, you'll feel right at home.

What we look for

• A senior front-end developer (at least 5+ years of experience)
• Strong experience with graphics programming (canvas, svg, webgl, etc)
• A critical thinker - especially about your own work
• Fluent in both English and code
• An eye for detial, because pixels matter

Location

This is a remote position, but being in Europe - for time zone alignment - is highly preferred.

Compensation

We look for quality, and compensate accordingly.

Salary and compensation

Nansen is looking to hire a Staff Security Engineer to join their team. This is a full-time position that can be done remotely anywhere in Europe.

Biconomy empowers Web3 developers to build seamless, user-friendly dApps that work effortlessly across multiple blockchains. Our battle-tested modular account and execution stack eliminates traditional UX friction points, helping projects accelerate user adoption while reducing development costs. By processing over 50 million transactions across the 300+ dApps we’ve served, we’re powering the future of onchain economies.

The Role: Innovating at the Intersection of AI and DeFi

We’re assembling a new team to build an innovative AI-powered product aimed at transforming how users do on-chain transactions. This is a greenfield project in its early development, offering a unique opportunity to tackle complex challenges and push the boundaries of AI in Web3. We can share more details about the project throughout the interview process.

What Will You Be Doing?

• Develop next-generation AI for Crypto Transactions: Design and implement AI-driven solutions that enhance multi-chain interactions, focusing on scalability, security, and usability.
• Optimize AI & Multi-Agent System Performance: Work on improving system efficiency when interacting with AI models, mitigating hallucinations, and enhancing the performance of multi-agent systems for latency and accuracy.
• Build AI-powered automation systems: Develop and deploy LLM-based AI agents capable of interpreting and executing user intents, providing automated execution strategies for on-chain transactions.
• Deploy and fine-tune local AI models: Ensure high efficiency, accuracy, and security in real-world DeFi applications by fine-tuning LLMs and local machine learning models.
• Work with advanced blockchain infrastructure: Implement solutions that understand and process on-chain DEX transactions, bridge transactions across EVM and non-EVM chains, and optimize execution paths.
• Collaborate cross-functionally: Work closely with blockchain engineers, product teams, and UX/UI designers to integrate AI seamlessly into the Biconomy ecosystem.
• Stay on the cutting edge: Research and experiment with the latest advancements in AI, machine learning, and blockchain to keep our product innovative and competitive.

Requirements:

• 5+ Years of Software Development: Including at least 2 years in blockchain development, with proven experience leading technical teams and projects.
• Strong AI & ML Expertise: Hands-on experience deploying and fine-tuning LLM models and developing local AI models for optimized inference.
• Deep blockchain knowledge: Understanding of on-chain DEX transactions, bridge transactions across EVM and non-EVM chains, and the infrastructure behind them.
• DeFi Enthusiast: 2+ years of experience interacting with DeFi protocols and multi-chain ecosystems.
• Proficient in Python, TypeScript, and React, with a focus on clean, scalable, and maintainable code. Knowledge of Solidity or Rust is a plus.

What We Offer:

• Flexible Working Hours: Enjoy autonomy over your schedule.
• Generous Vacation Policy: 25 days vacation per year plus public holidays
• Competitive Salary: With regular performance reviews.
• Token Allocation: Be rewarded with tokens as part of our compensation package.
• Growth Opportunities: Be part of an exciting new project with significant career growth potential.
• Innovative Work Culture: Join a team that’s at the cutting edge of Web3, AI, and DeFi, and help shape the future of the digital economy.
• Fun and Engaging Team Activities: Game nights, virtual celebrations, and work retreats to keep things exciting.

At Biconomy, we believe in creating a erse and inclusive workplace. We are committed to being an equal-opportunity employer, and we do not discriminate based on race, national origin, gender, gender identity, sexual orientation, disability, veteran status, age, or any other legally protected status.

Biconomy empowers Web3 developers to build seamless, user-friendly dApps that work effortlessly across multiple blockchains. Our battle-tested modular account and execution stack eliminates traditional UX friction points, helping projects accelerate user adoption while reducing development costs. By processing over 50 million transactions across the 300+ dApps we’ve served, we’re powering the future of onchain economies.

The Role: Innovating at the Intersection of AI and DeFi

We are assembling a world-class team to redefine on-chain analytics using AI Agents & Machine Learning. As a DevOps Engineer, you will build and optimize the AI & ML infrastructure, enabling real-time wallet activity analysis, ML-driven tagging, and PnL insights at scale. You’ll work with Kafka, Snowflake, AWS S3, and high-speed data pipelines to process over 10-15 billion rows of historical data and real-time streaming events, ensuring a scalable, secure, and efficient AI ecosystem.

This is a high-impact role at the core of our AI-driven crypto intelligence platform.

What Will You Be Doing?

Scalable AI & ML Infrastructure

• Design & optimize cloud-native architectures for AI & ML-driven analytics on DeFi transactions.
• Develop and maintain high-performance, distributed computing environments that process billions of on-chain and off-chain events.
• Deploy and manage ML models & AI agents efficiently in Kubernetes (K8s) and other containerized environments.

High-Speed Data Engineering

• Design real-time streaming pipelines using Kafka for high-frequency on-chain transaction ingestion.
• Optimize Snowflake queries & storage solutions to handle large-scale blockchain datasets efficiently.
• Implement ETL/ELT pipelines for structured & unstructured blockchain data aggregation.

Infrastructure Automation & Reliability

• Automate cloud infrastructure using Terraform, Pulumi, or CloudFormation for seamless scaling.
• Enhance security & performance with CI/CD best practices for AI model deployment.
• Implement observability, logging & monitoring with tools like Prometheus, Grafana, and Datadog.

ML & AI Model Deployment

• Streamline model deployment for AI agents that analyze blockchain wallet behavior.
• Build infrastructure to support model training, inference, and real-time decision-making.
• Optimize GPU workloads for AI-driven pattern recognition & risk analysis.

Collaboration Across Teams

• Work alongside AI engineers, blockchain developers, and data scientists to integrate AI-driven insights into DeFi tools.
• Optimize node infrastructure & RPC services for multi-chain DeFi interactions.
• Research and implement best practices in Web3 DevOps, cloud automation, and ML infrastructure.

Requirements:

Core Experience

• 5+ years of DevOps experience, specializing in AI/ML infrastructure & high-scale data pipelines.
• Expertise in AWS, GCP, or Azure, focusing on scalable, event-driven architectures.
• Experience handling Kafka queues, Snowflake databases, and massive-scale data processing.

DevOps & Infrastructure Skills

• CI/CD Automation using GitHub Actions, CircleCI, Jenkins, or ArgoCD.
• Kubernetes & Docker for managing AI workloads and high-performance model inference.
• Infrastructure-as-Code (IaC): Terraform, Pulumi, or CloudFormation.

Data Engineering & AI Model Ops

• Experience with Kafka, Snowflake, and S3 for real-time & historical data processing.
• ML Model Deployment: Knowledge of TensorFlow, PyTorch, or ONNX for AI-based wallet analytics.
• Strong Python & Bash scripting for automation and orchestration.

Security & Reliability

• Security-first mindset: Experience with IAM, firewall management, and Web3 security best practices.
• Observability & Monitoring using Prometheus, Grafana, Datadog, or OpenTelemetry.

Bonus Skills

• Experience with multi-chain blockchain infrastructure (Ethereum, Solana, L2s).
• Knowledge of DeFi protocols, smart contracts, and risk analytics.
• Experience with AI inference at scale (Ray, Triton, Hugging Face Transformers, etc.)

What We Offer:

• Flexible Working Hours: Enjoy autonomy over your schedule.
• Generous Vacation Policy: 25 days vacation per year plus public holidays
• Competitive Salary: With regular performance reviews.
• Token Allocation: Be rewarded with tokens as part of our compensation package.
• Growth Opportunities: Be part of an exciting new project with significant career growth potential.
• Innovative Work Culture: Join a team that’s at the cutting edge of Web3, AI, and DeFi, and help shape the future of the digital economy.
• Fun and Engaging Team Activities: Game nights, virtual celebrations, and work retreats to keep things exciting.

At Biconomy, we believe in creating a erse and inclusive workplace. We are committed to being an equal-opportunity employer, and we do not discriminate based on race, national origin, gender, gender identity, sexual orientation, disability, veteran status, age, or any other legally protected status.

We’re looking for a senior generalist software engineer with expertise in backend and/or native app development, and interest in systems architecture and IoT.

In this role, you’ll work on a variety of client projects to find cost-effective, high-quality, pragmatic solutions to complex problems. Responsibilities will include:

• Crafting technical architecture plans through interfacing with clients to understand product requirements
• Developing and optimizing technical solutions while keeping in mind performance, scalability, maintainability, and cost-effectiveness
• Participating in code reviews, providing constructive feedback to teammates and ensuring adherence to best practices
• Contributing to project success by keeping a close eye on team velocity, project scope, budget, and timeline
• Negotiating with clients to align project scope with budget and timeline, if needed

The person we’re looking for is happy, relaxed and easy to get along with. They’re flexible on anything except conceits that will lower their usually outstanding work quality. They work “smart”, by carefully managing their workflow and staggering features that have dependencies intelligently — they prefer deep work but are OK coming up to the surface now and then for top level / strategic conversations.

We believe people with backgrounds or interests in design, art, music, food or fashion tend to have a well rounded sense of design & quality — so a variety of hobbies or side projects is a big nice to have!

Salary and compensation

Benefits

🌎 Distributed team

⏰ Async

🤓 Vision insurance

🦷 Dental insurance

🚑 Medical insurance

🏖 Paid time off

📆 4 day workweek

🏔 Company retreats

🏬 Coworking budget

📚 Learning budget

🖥 Home office budget

💰 Profit sharing

⬜️ No whiteboard interview

👀 No monitoring system

Semaphore is a leader in hosted continuous integration and deployment, with over 50,000 developers relying on Semaphore to test and deploy their code. Our mission is to help teams ship their software faster and with more confidence by providing a robust and scalable platform for software delivery.

Our platform provides continuous delivery services for all mainstream programming languages as well as native support for building and shipping Docker containers. We aim to deliver the easiest to use and fastest CI/CD service. We work in small highly effective teams, so every team member is vital to the success of the company.

We’re looking for collaborative, detail-oriented people who are ready for a challenge. In this role, you’ll have the opportunity to take significant ownership of technical projects that will drive the success of the overall business. A strong candidate will bring solid product and technical acumen, combined with the ability to move fast (and fix things).

We are passionate about providing a remote, flexible and supportive work culture. Collaboration is in our DNA.

P.S. We are soon going to open-source, and are super excited about that! We hope you will be also. Be sure to check out https://semaphoreci.com/summit.

Examples of problems you’ll be solving

• Implementing new Semaphore features
• Improving the internal and external APIs of Semaphore
• Automating the release process, monitoring, and solving scalability issues
• Contributing to and collaborating on Open Source software
• Optimizing performance and scalability of Semaphore

Qualifications

• You have 5+ years of professional experience.
• You have experience with shipping services into production, and maintaining their quality.
• You have experience with developing database-backed web applications.
• You are proficient in one or more high-level languages.
• You are self-managed and capable of making effective decisions.
• You care about building maintainable, efficient, clean code.
• You speak and write well. We’re a distributed team so we’re extra mindful about communication.
• You are willing to master Golang and/or Elixir, our primary languages for writing Semaphore.
• You are proficient with following TDD/BDD practices for implementing new features.
• You have experience with taking responsibility for projects end-to-end from idea to completion.
• You have experience with Linux and the command line.

Benefits

• The impact of working on a product that’s competing on a global market.
• Join a small team of around 30 full-time people who love what they do.
• A healthy 40-hour work week, friendly and supportive work environment.
• Competitive salary.
• Company retreats.
• Space to learn continuously and choose the tools and equipment for your job
• Paid trips to conferences and books of your choice.
• Interact with developers that use Semaphore and talk about the latest and greatest way to develop and ship software.
• Paid membership at a fitness club of your choice

Semaphore is an equal-opportunity employer. Consistent with our mission of serving a erse and global audience, we value a erse workforce and inclusive culture which reflects that. We encourage applications from all qualified iniduals without regard to race, color, religion, gender, sexual orientation, gender identity or expression, age, national origin, marital status, disability, and veteran status.

WOO Network is looking to hire a Senior Technical Support Engineer to join their team. This is a full-time position that can be done remotely anywhere in APAC.

Job Description

We are looking for an experienced Smart Contract Auditor / On-Chain Engineer to join our fast-growing team. As a member of our team, you will be responsible for auditing and securing smart contracts, modeling edge cases and hack scenarios, as well as developing and maintaining on-chain infrastructure solutions. You will work closely with our blockchain developers and product teams to ensure the integrity and security of our smart contracts deployed across various decentralized platforms.

A key part of your role will be conducting in-depth research on emerging protocols and staying up to date with the latest trends, vulnerabilities, and innovations in the DeFi and blockchain space. This will help you ensure that our smart contracts are not only secure but also take full advantage of new, best-in-class protocol features.

Additionally, a solid understanding of on-chain execution, including optimizing transaction flows, is essential for this role. Experience with writing trading bots that interact with on-chain protocols or decentralized exchanges would also be highly beneficial.

If you are passionate about the intersection of blockchain technology, security, and innovative development, this role is for you.

Responsibilities:

• Research Emerging Protocols: Analyze new blockchain protocols, reviewing their documentation, audits, and smart contracts to identify risks and recommend improvements for integration.
• Code Review & Analysis: Review code for compliance with best practices, identifying potential security flaws, and ensuring that contracts function as intended.
• Smart Contract Auditing: Perform thorough security audits on smart contracts, identifying vulnerabilities, bugs, and optimization opportunities. Provide actionable recommendations to mitigate risks.
• Collaboration with Teams: Work closely with blockchain developers, product managers, and stakeholders to design and implement secure smart contract solutions.
• Troubleshooting and Technical Support: Provide support for ongoing issues or incidents related to smart contract vulnerabilities or failures.
• Documentation & Reporting: Maintain detailed reports and documentation on auditing processes, findings, and resolutions.

Requirements & Skills:

• 3+ years of experience in smart contract auditing and on-chain development.
• Strong proficiency in Solidity and in-depth understanding of Ethereum Virtual Machine (EVM) and gas optimization.
• Familiarity with decentralized finance (DeFi) protocols and platforms (e.g., Uniswap, Aave, Compound, Pendle).
• Deep knowledge of smart contract security best practices, including common vulnerabilities
• Knowledge of consensus mechanisms used in PoS systems (staking, restacking, slashing , etc …).
• Experience with on-chain execution, including transaction optimization, gas management, and effective interaction with DeFi protocols.
• Ability to provide clear technical documentation and communicate security findings to both technical and non-technical stakeholders.
• Fluent in English (wriYen and spoken), with the ability to communicate effectively in a distributed team.

Nice to Have:

• Experience with other blockchain platforms such as Solana, Cosmos, or
• Familiarity with formal verification techniques or static analysis tools for smart contract auditing.
• Experience writing and maintaining on-chain trading bots or algorithms that interact with decentralized exchanges or other on-chain assets.

We Offer:

• Competitive salary and performance-based bonuses.
• Remote-first environment with flexible working hours.
• A dynamic and fast-paced work environment where you can contribute directly to cutting-edge blockchain products.
• Opportunities for personal growth and skill development in the growing blockchain and DeFi space.
• A collaborative, innovative team of professionals passionate about blockchain, crypto, and DeFi.

Position: Full-time

Location: Flexible; availability during US trading hours is preferred.

About Edge Capital

Edge Capital is an innovative alternative hedge fund focused on digital assets, blockchain, and decentralized finance (DeFi) markets. We combine algo trading and macro strategies to identify untapped opportunities in these markets based on our multidisciplinary expertise in macro trading and analysis, portfolio, and risk management, combined with our extensive knowledge and experience in fintech, DeFi, and blockchain technologies.

What we’re looking for

StableUnitDAO is looking for a lead solidity architect for a complex DeFi protocol (not NFT)

Requirements

• DeFi solidity contracts deployed on mainnet in the last 12 months
• Knowledge of OZ libs and modern DeFi primitives
• You know system design of DeFi protocols, CDP, lending etc
• Experience with modern DeFi best practices

You must have prior experience with at least one of

• Projects with simultaneous multichain
• Projects with mission critical oracle
• Yield aggregators/optimizers
• CDP/Algo stablecoins
• Lending protocols

Detailed explanation of the protocol.

In this project you will work side by side with an architect who is ex 1inch, facebook, amazon, prizewinner of ethNY (award from Binance labs, Wyre, Matic), ethBoston (JPMorgan), ethDenver (MakerDao, Chainlink), ethLison (Gnosis), cs-national team, math degree, wrote multiple contracts with $1.1B in volume. The project itself is a winner of multe grants including Arbitrum security grant.

The protocol is 100% owned by a DAO, members of which are accomplished investors and DeFi builders, such as founders and early employees from 1inch, lobsterDAO, GearBox, PowerPool, Zerion, ZeroPool, STFX. Advisors and early investors of Binance, Matic, Bittensor, Trustwallet and others. We’re open for all formats of work, full/part-time, project-based or outstaff.

How to apply

Self-check: For some inexplicable reasons some folks lie about their experience, but is just a waste of our and your time. Be sure you know all main topics of “mastering ethereum”, read and actually understand solidity/opcode/evm specs, and can easily solve any task from https://ethernaut.openzeppelin.com.

If you are a good match:

1. Send us 2 addresses of mainnet smart-contacts you developed that you are most proud of.
2. We would schedule a single 30m tech interview.
3. After interview, we are immediately ready to sign the paid contract for the test period/project.

For any questions https://t.me/elpinguinofrio

Metabase is hiring a remote Open Source Community Advocate. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

Metabase - The fastest, easiest way to share data and analytics inside your company.

"

* We are looking for a Founding Applied AI engineer to join the team. The ideal candidate is someone with 5+ years of experience. We are looking for someone that has built AI driven workflows, agents, or applications from the ground up to serve specific business outcomes. 

",

"

About the Role

* We are looking for a full-stack engineer to join the team as a founding engineer. The ideal candidate is someone with 5+ years of experience across both frontend and backend with ownership and evidence of architecting the technical foundations of products that drove significant business value. You’d interface directly with the co-founders and would be treated as an equal as helping to drive these outcomes at Saphira.

About the Interview

* Fit / behavioral interview (30 minutes)

",

Autonomys Network, in collaboration with the Subspace Foundation, is supporting an open research effort led by our Technical Co-Founder, on designing a permissionless unbounded sharding protocol. This role is for a Senior Cryptography Researcher with strong expertise in permissionless blockchain consensus protocols and distributed systems.

Research Objective: The goal is to design a permissionless sharding protocol that extends PoAS while maintaining its permissionless property with, ideally, shared security across unbounded number of shards. This work builds upon the Subspace v2 (Dilithium) consensus, which was developed over several years and launched as Autonomys Network. The work is open-ended but with clear milestones, focusing on extending our Proof-of-Archival-Storage (PoAS) consensus protocol.

Given this is an open research role, there is flexibility in how the work is structured. We would like to have someone that can commit to a full time contract, but we are open to part time commitments for the right person.

Materials (Research Context):

• High-level Subspace PoAS consensus overview
• Implementation specifications
• Research paper
• Preliminary design constraints

Research Scope:

• Propose an initial candidate design of a permissionless sharding protocol with PoAS within one month.
• Advance to a state in which implementation prototyping can begin within three months.
• Complete a formalized design with an initial security proof within one year.

Requirements:

• Strong expertise in permissionless consensus protocols (Proof-of-Work, Proof-of-Space) and large-scale distributed systems like public blockchains.
• Familiarity with current landscape of blockchain sharding designs and blockchain protocols at large.
• High agency: solving complex problems, proposing alternatives and novel solutions with minimal to no oversight.
• Strong communication skills: responsiveness in async communications, timely updates about progress and any roadblocks, and ability to explain complex topics in approachable way.
• Result-oriented, not process-oriented.
• Ability to formalize and evaluate properties of cryptographic protocols.
• Ability to author research articles and papers.

SideShift.ai, the direct to wallet crypto exchange, is hiring a Junior Backend Engineer.

Since launching in late 2018, SideShift.ai has been growing rapidly. With seven-figure daily volume and key industry partnerships, we have achieved a lot but there is still plenty more to do. To slot in with our stack we are looking for someone who has experience with TypeScript, PostgreSQL, Redis and GraphQL.

We are searching for a junior backend engineer who is hungry to scale up their skillset and learn on the job.

Role

• Design, build, and maintain SideShift.ai.
• Take ownership of certains aspects of the SideShift.ai backend.
• Ship. Your ideas will make it into live products in no time.

You

• Junior level experience working with tools such as TypeScript, PostgreSQL, Redis and GraphQL.
• Hungry to learn and comfortable taking initiative.
• Strong interest in working on a cryptocurrency product.
• Able to join team meetings in EU/Asia timezones (but we try to avoid meetings as much as possible).

Nice to have

• Experience with financial markets is a bonus but not necessary.
• EU/Asia timezone preferred.
• An appreciation for memes.

Perks

• Salary paid in a SideShift.ai crypto of your choice.
• Join a profitable company with traction (seven figure weekly volume) and key industry partnerships with the likes of Trezor, Blockstream, Edge Wallet and more.
• Ship from the start. Your ideas actually lead to product developments with us.
• Remote first - work wherever you feel most productive.
• Flexible vacation policy.

Please note: SideShift.ai will pay fair market rates based on your location and experience.

Pulumi is hiring a remote Cloud Support Engineer (Australia). This is a full-time position that can be done remotely anywhere in Australia.

Pulumi - Modern infrastructure as code.

HubSpot is hiring a remote Software Engineer Summer Internship (UK). This is an internship position that can be done remotely anywhere in the United Kingdom.

HubSpot - Inbound marketing, sales, and service software.

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

Medium - A place to read and write big ideas and important stories.

Onramp and Offramp are the bridge between the fiat and onchain economies. Coinbase Onramp is the easiest way to move money onchain, a key part of onboarding users into crypto and enabling our mission to create an open financial system for the world.You will be joining a startup team of talented engineers within Coinbase on a mission to build the best rails to move money onchain and offchain. Onramp enables billions of dollars a year to come onchain and you will play a critical role in expanding our product offering. Our customers are some of the most used applications in crypto including Coinbase Wallet, Metamask, Phantom,  Block (Bitkey), and Ledger. What we look for in you:* You have at least 5  years of experience in software engineering.* Scrappy self-starter mindset with willingness to push through action to improve customer UX* Solid understanding of distributed systems, microservices architecture, and event-driven architectures* Experience working full stack across Web, Mobile, and Backend* You write high quality, well tested code to meet the needs of your customers.* Excellent communication and collaboration skills, with the ability to work closely with designers and product managers* Passion for great developer tooling and opinions on what makes developer platforms excellent * Passion for Onchain/Web3 and understanding of blockchain technologies, particularly Ethereum and EVM-compatible chainsNice to haves:* You have gone through a rapid growth in your company (from startup to mid-size).* You have experience building on top of  Blockchain technology (such as Bitcoin, Ethereum etc..)* You have experience decomposing a large monolith into microservices.* You’ve built financial, high reliability or security systems.Job #: GDBE05USPay Transparency Notice:  Depending on your work location, the target annual salary for this position can range from $[Zone 3 Pay] to $[Zone 1 Pay] + target bonus + target equity + benefits (including medical, dental, vision and 401(k)).   #Salary and compensation

FullStory is hiring a remote Senior Software Engineer, AI Focus. This is a full-time position that can be done remotely anywhere in the United States.

FullStory - Digital experience analytics, session replay, heatmaps.

Overview:

A client of Scalable Path is expanding its educational web application into the private sector, and it needs help improving the quality and performance of its existing application. This involves creating automated tests, implementing logging, and improving the dev team’s practices.

The client is a Canadian company that has an existing web application that helps young students learn French as a second language.

A core challenge they are facing is getting their Unity 3D WebGL application that runs well on desktop to work reliably on Android and iOS. Specific examples include stabilizing a 3rd party whiteboard feature that is not working properly and getting the application to run consistently in browsers on modern versions of the iPhone and iOS. The application uses Spring Boot on the back-end and React on the front-end. Additionally they are using OpenVidu and WebRTC.

If you have experience with the back-end technologies mentioned above, that would be nice, but their core need is a strong React developer who is experienced with state management and real-time applications.

They use Jira for project management.

Duties and responsibilities:

• Attend daily scrum
• Consult with management on operational requirements
• Build new features in the front-end and back-end
• Debug and fix issues with existing application
• Refactor, optimize and simplify code to performance and readability
• Break down systems into smaller, modular components to improve scalability and flexibility
• Write automated tests
• Implement bug and performance monitoring
• Mentor junior developers and perform code reviews
• Implement best practices with the dev team

Relationships - who you’ll be working with:

You’ll be working with the CTO, Engineering Manager, 2 Web Developers, 3 Unity3D Developers and a DevOps Engineer. There is an existing daily meeting at 9:00 am America/Toronto (-04:00) EDT.

• Start date: As soon as possible.
• Expected contract duration: 12+ months

Preferred regions:

• The client’s preference is for candidates to be located in Canada, Latin America, or the United States.

Required skills:

• English (Must have)
• Python (Must have)
• Machine Learning (Must have)
• TensorFlow (Strongly preferred)
• Vector Databases (Must have)
• Google Cloud (Nice to have)
• PyTorch (Strongly preferred)
• JAX (Strongly preferred)

About Codex

We’re a erse team of experienced researchers and engineers scattered around the world working at the intersection of P2P networks and bleeding-edge Zero Knowledge technology. We’re building the next generation storage engine that attempts to “untie the knot” of incentivized storage. Our goal is to deliver a more advanced decentralized storage protocol that pushes the state of the art of decentralized storage solutions forward.

We’re looking for an experienced P2P Networking Protocol Engineer with hands-on experience designing and implementing state of the art networking protocols and distributed systems.

https://codex.storage/

Key responsibilities

• Design, implement and maintain state of the art p2p protocols and decentralized storage solutions
• Coordinate with the ongoing testing efforts to identify and eliminate instabilities in the existing codebase and bring it to production levels quality
• Implement and design new features as part of roadmap milestones

You ideally will have

• Strong academic or engineering background (PhD-level or equivalent in industry); relevant research experience
• Experience with low level libp2p primitives
• Experience with low level/strongly typed languages (C/C++/Go/Rust or Java/C#)
• Experience with Open Source software
• Keen communicator, eager to share your work in a wide variety of contexts, like internal and public presentations, blog posts and academic papers
• Strong networking (P2P systems) background
• Good debugging skills
• Good at explaining a complicated issue at varying levels of complexity for others to understand
• A strong alignment to our principles

Bonus points if

• Familiarity with the Nim programming language
• Familiarity with zero-knowledge proofs and other ZK-technology
• Familiarity with advanced cryptographic hashing functions

[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 People Ops team
• Interview with Codex team member
• Pair Programming Task
• Interview with Codex Program Lead

Compensation

We are happy to pay in any mix of fiat/crypto.

Apollo is hiring a remote Backend Engineer. This is a full-time position that can be done remotely anywhere in Poland.

Apollo - Apollo is the all-in-one sales intelligence platform.

Gelato is an all-in-one Ethereum Rollup as a Service Platform built without limits. Designed to be super-fast, incredibly secure, and infinitely scalable, Gelato rollups allow anyone to build and deploy their fully serviced Layer 2 chains on Arbitrum, Optimism, Polygon, Celestia and more at a pace natively integrated with Web3’s favorite tools and services like Etherscan, The Graph, Pyth, Layer Zero and many more launching a production-ready web3 development environment from the Genesis block.

What we offer:

• Join one of the most technically robust teams in the crypto space, operating in a fully remote environment with our headquarters located in the crypto hub of Zug, Switzerland.
• Play a pivotal role in shaping the future of blockchain, by contributing to the development of Gelato’s Rollup-As-A-Service Platform, already trusted by leading projects like Lisk and Astar Network.
• Dive deep into cutting-edge Web3 technologies with exposure to Gelato’s premier Middleware Services stack, including Gelato Web3 Functions and Gelato Relay, foundational to top-tier applications such as MakerDAO, Connext, Abracadabra, and Pancakeswap.
• Earn and have a say with the GEL Token package, granting you a stake in the network’s future and a voice in the strategic direction of the project.
• Be backed by the best, with support from world-class investors including Dragonfly, IOSG, Galaxy Digital, ParaFi, Gnosis, and renowned figures like Stani Kulechov among others, securing your position at the forefront of the Web3 revolution.

Responsibilities:

• Design and develop scalable Web3 backend APIs, enabling seamless interaction between backend and frontend applications and the blockchain, ensuring high availability and performance for millions of users worldwide.
• Develop and maintain backend services for smart contract interaction, ensuring seamless integration and communication between smart contracts and the application layer. Focus on creating robust APIs and middleware that facilitate secure and efficient interactions with the blockchain, handling tasks such as event listening, transaction processing, and on-chain data retrieval.
• Specialize in smart contract lifecycle management, from writing and deploying smart contracts to conducting automated testing and security audits. Ensure the reliability and security of smart contracts through rigorous validation processes, upgrades, and optimizations to support flawless execution on the blockchain.
• Optimize blockchain data processing, implementing efficient methods for ingesting, storing, and querying on-chain data to support real-time analytics and user-facing applications.
• Collaborate on cross-functional projects, working closely with front-end developers and product teams to integrate blockchain functionalities into user-centric applications, enhancing overall user experience.
• Implement best practices for blockchain security, staying ahead of the latest in smart contract vulnerabilities, and employing rigorous security measures and auditing processes to safeguard all deployed contracts and back-end systems.
• Advance our infrastructure-as-code approach, taking a hands-on role in the continuous integration and delivery pipelines, ensuring that all back-end services are scalable, reliable, and secure.
• Drive innovation in Web3 technologies, researching and integrating new blockchain protocols and tools to keep the platform at the cutting edge of decentralized applications.

Requirements

• You can work autonomously on research, spec, implementation, deployment, monitoring and patching your code
• You are comfortable with Software Engineering (and a little bit of DevOps)
• You’ve extensive experience in shipping production-grade code that handles thousands of user interactions/transactions
• 4 years experience with either Node.js/TypeScript
• 4 years experience with highly scalable Web API engineering
• Strong experience with high throughput Database systems
• Strong experience with maintaining scalable microservices systems
• Good experience with distributed systems and/or container orchestration
• Strong interest in Web3/crypto industry
• Experience using crypto applications (e.g. Uniswap, Aave, etc.)

Not essential, but big bonus points:

• Experience with Web3 libraries and backend development (e.g. ethers.js, viem)
• Experience in Solidity smart contract development
• Knowledge about the inner workings of the EVM
• Experience with P2P systems and libraries (e.g. libp2p)

Technologies we use and teach:

• Node.js/TypeScript
• Golang/Rust
• GETH and its various Rollup forks
• libp2p
• RabbitMQ
• Redis
• PostgreSQL / TimescaleDB
• GCP (less AWS)
• Ethers.js
• Subgraphs
• Solidity

Benefits

• Fully remote team, with team members in Zug, Paris, New York, London, Singapore, and many other cool places.
• Competitive package with a generous token package. Get a share of the network token and be able to participate in the Gelato DAO
• Chance to participate in shaping the future of web3 by working together with the biggest projects in this space that use Gelato such as Optimism, Polygon, Arbitrum, Celestia and Eigenlayer
• World-class Investors - We are backed by the community, including industry-leading experts such as Dragonfly, ParaFi, Nascent, IDEO, IOSG and Galaxy Digital

Outlier helps the world’s most innovative companies improve their AI models by providing human feedback. Are you an experienced software engineer who would like to lend your coding expertise to train AI models?

We partner with organizations to train AI large language models, helping cutting-edge generative AI models write better code. Projects typically include discrete, highly variable problems that involve engaging with these models as they learn to code. There is no requirement for previous AI experience.

About the opportunity:

• Outlier is looking for talented coders to help train generative artificial intelligence models
• This freelance opportunity is remote and hours are flexible, so you can work whenever is best for you

You may contribute your expertise by…

• Crafting and answering questions related to computer science in order to help train AI models
• Evaluating and ranking code generated by AI models

Examples of desirable expertise:

• Currently enrolled in or completed a bachelor's degree or higher in computer science at a selective institution
• Proficiency working with one or more of the the following languages: Java, Python, JavaScript / TypeScript, C++, Swift, and Verilog
• Ability to articulate complex concepts fluently in Norwegian 
• Excellent attention to detail, including grammar, punctuation, and style guidelines

Payment:

• Currently, pay rates for core project work by coding experts range from USD $25 to $50 per hour.
• Rates vary based on expertise, skills assessment, location, project need, and other factors. For example, higher rates may be offered to PhDs. For non-core work, such as during initial project onboarding or project overtime phases, lower rates may apply. Certain projects offer incentive payments. Please review the payment terms for each project.

Salary and compensation

Benefits

🌎 Distributed team

⏰ Async

🚫 No politics at work

🎅 We hire old (and young)

Outlier helps the world’s most innovative companies improve their AI models by providing human feedback. Are you an experienced software engineer who would like to lend your coding expertise to train AI models?

We partner with organizations to train AI large language models, helping cutting-edge generative AI models write better code. Projects typically include discrete, highly variable problems that involve engaging with these models as they learn to code. There is no requirement for previous AI experience.

About the opportunity:

• Outlier is looking for talented coders to help train generative artificial intelligence models
• This freelance opportunity is remote and hours are flexible, so you can work whenever is best for you

You may contribute your expertise by…

• Crafting and answering questions related to computer science in order to help train AI models
• Evaluating and ranking code generated by AI models

Examples of desirable expertise:

• Currently enrolled in or completed a bachelor's degree or higher in computer science at a selective institution
• Proficiency working with one or more of the the following languages: Java, Python, JavaScript / TypeScript, C++, Swift, and Verilog
• Ability to articulate complex concepts fluently in Danish 
• Excellent attention to detail, including grammar, punctuation, and style guidelines

Payment:

• Currently, pay rates for core project work by coding experts range from USD $25 to $50 per hour.
• Rates vary based on expertise, skills assessment, location, project need, and other factors. For example, higher rates may be offered to PhDs. For non-core work, such as during initial project onboarding or project overtime phases, lower rates may apply. Certain projects offer incentive payments. Please review the payment terms for each project.

Salary and compensation

Benefits

🌎 Distributed team

⏰ Async

📆 4 day workweek

🎅 We hire old (and young)

"

* Sepal AI specializes in PhD-level experts for AI model development. We provide robust, frontier data through a comprehensive process in sourcing, vetting, matching, trials, and peer quality control. We are currently working with the world's leading foundational AI model companies across domains in advanced sciences, professional services, and safety & preparedness.

",

• Choose flexible scheduling options to accommodate your lifestyle
• Gain hands-on experience through practical projects.
• Build a robust portfolio that sets you apart in the job market
• Collaborate with peers to enhance your communication and teamwork skills.
• Benefit from personalized feedback and 1-on-1 mentorship
• Learn on a structured learning path
• Upskill and Land a Job in 4-Months
• 100% Money Back Guarantee

Salary and compensation

About us

At Pass App, we’re on a mission to ignite financial freedom and true ownership for people everywhere. Each member of our team takes ownership and contributes a unique piece to our journey into the exciting realm of web3. Together, we craft more than just meaningful products and services—we create a lasting tangible impact in the real world.

We want you to join our search for greatness at the edge of what is technologically possible. Are you tired of the ordinary? Crave a challenge that sparks passion and purpose? We’d love to have you apply!

Our Team Values

• We value iterative learning
• We value taking ownership and leading by example
• We value creating an environment where everyone can unleash their true potential

The role you’re applying for

We are cooking up several big new initiatives, one of which is Pass App, a suite of products that will completely revolutionize how people experience and engage with web3.

We’re on the lookout for a talented and motivated QA Engineer to join our dynamic team. The ideal candidate should possess extensive experience in quality assurance, specifically within the realm of native mobile applications, blockchain and decentralized applications. You will be instrumental in ensuring the reliability, security, and user-friendliness of our web3 mobile wallet. This role demands meticulous attention to detail, a thorough grasp of blockchain technology, and the ability to work effectively with our development and product teams.

Joining in the early stages, you’ll play an active role in ensuring the quality and reliability of a truly innovative product and bringing it to market. Collaboration is essential in this position, as a team we can build impactful products.

What you’ll be doing

• Design, develop, and implement test plans to ensure the reliability and performance of our web3 mobile wallet.
• Develop and maintain automated test scripts for mobile applications using React Native
• Create, manage, and optimize automated testing frameworks for seamless product updates.
• Conduct thorough testing across platforms to identify and resolve bottlenecks, errors, and vulnerabilities.
• Collaborate with developers and product teams to deliver high-quality products.
• Lead and participate in peer reviews of test plans and code to maintain QA standards.
• Implement manual and automated test frameworks.
• Conduct performance and load testing to ensure the wallet can handle high activity levels.
• Provide detailed, actionable bug reports and work with developers for clarification and timely resolution
• Evaluate the app interface and user experience for intuitiveness and ease of use.

What we’re looking for

• QA Engineer with 4+ years of professional hands-on experience
• Strong communication and collaboration skills, especially written
• Experience with agile development methodologies
• Extensive experience testing native mobile apps
• Review, optimise and maintain QA processes
• Experience creating STDs and STPs
• Proficiency in manual testing, including functional, regression, integration and UAT testing
• Basic knowledge of Blockchain and Web3 technologies
• Familiar with API testing & databases
• Familiar with project management tools like Jira

Bonus skills

• QA automation with a focus on blockchain technologies
• Proficiency in programming languages such as Python, JavaScript
• Experienced in automated testing tools (e.g Selenium, Appium)

We got you covered

Working remotely is more than just a benefit or a perk. We believe in the power of remote work to unleash creativity and passion. Join our globally remote team with 35+ different nationalities and enjoy the flexibility to work from anywhere in the universe. You should be available during European working hours.

Join our team and pursue your passions on your own terms, while we provide you with learning and development budgets, personal development plans and team retreats to fuel your web3 curiosity.

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

Flatfile - The elegant import button for your web app.

Modern Treasury is hiring a remote Lead Frontend Engineer. This is a full-time position that can be done remotely anywhere in the United States.

Modern Treasury - Payment operations solutions that automate the full cycle of money movement.

Going is hiring a remote Senior Software Engineer. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

Going - The travel membership that saves you hundreds on flights.

Time zones: EST (UTC -5), CST (UTC -6), MST (UTC -7)

We transform successful businesses by turning their proven processes into powerful software systems.

We’re looking for developers who take pride in crafting solutions that help these businesses grow.

Do you…

• find satisfaction in understanding how businesses work and making them better through technology?
• take pride in building software that stands the test of time?
• excel at methodically working through complex challenges until they’re solved perfectly?
• enjoy focusing deeply on one project and seeing it through to completion?

Are you…

• someone who enjoys mastering your tools and continuously improving?
• detail-oriented with an eye for systematic approaches?
• comfortable owning projects from start to finish?
• drawn to building solutions that create order from complexity?

Here’s what makes our work different

We’re not just building software – we’re creating systems that transform how businesses operate. Our clients trust us to understand their complex processes and turn them into elegant, efficient solutions.

Join a team of other self-motivated iniduals who excel at their craft. We take pride in the work we do and get excited about solving problems. We only hire self-motivated “drivers” and developers with lots of experience.

You’ll join a team that values

• Time to think through solutions properly
• Deep understanding of business processes
• Consistent, high-quality execution
• Protected focus time for complex challenges
• Long-term reliability over quick fixes

Your Day-to-Day

• Build custom platforms that turn manual processes into efficient systems
• Create intuitive interfaces that simplify complex operations
• Develop sophisticated integrations between modern and legacy systems
• Design robust reporting solutions that provide real business intelligence
• Craft solutions that help successful businesses scale

Experience Required

• Expert-level React development
• Strong background in TypeScript and Next.js
• Using AI assistance tools to develop better software
• Experience building and maintaining large-scale applications
• Clear written communicator that prefers emails to meetings
• Portfolio showing systematic, well-structured work

Bonus Points

• Experience building AI-powered tools (RAG, LLM, etc.)
• Experience building ERP/CRM systems
• Working with Django/Python background
• React Native experience
• Mad `/giphy` skills on Slack (or a desire to learn)

The Environment

• Stable, focused work environment
• Protected development time
• Regular, predictable schedule
• Email > meetings

Time zones: EST (UTC -5), CST (UTC -6), MST (UTC -7)

We transform successful businesses by turning their proven processes into powerful software systems. 

We’re looking for developers who take pride in crafting solutions that help these businesses grow.

Do you...

• find satisfaction in designing systems that bring order to complex business operations?
• take pride in building robust architectures that scale reliably?
• excel at modeling complex business processes into elegant data structures?
• enjoy deeply understanding business problems before crafting solutions?

Are you…

• someone who enjoys mastering your tools and continuously improving?
• detail-oriented with an eye for systematic approaches?
• comfortable owning projects from start to finish?
• drawn to building solutions that create order from complexity?

Here’s what makes our work different

We’re not just building software – we’re creating systems that transform how businesses operate. Our clients trust us to understand their complex processes and turn them into elegant, efficient solutions.

Join a team of other self-motivated iniduals who excel at their craft. We take pride in the work we do and get excited about solving problems. We only hire self-motivated “drivers” and developers with lots of experience.

You’ll join a team that values

• Time to think through solutions properly
• Deep understanding of business processes
• Consistent, high-quality execution
• Protected focus time for complex challenges
• Long-term reliability over quick fixes

Your Day-to-Day

• Design and build robust backends that power business transformation
• Create sophisticated data models that reflect complex business rules
• Develop reliable integrations between modern and legacy systems
• Build powerful APIs that connect disparate business systems
• Implement secure, scalable solutions for business-critical operations

Experience Required

• Expert-level Django development with deep understanding of the ORM
• Strong background in Python and API design
• Experience building and maintaining large-scale applications
• Excellence in database design and optimization
• Understanding of complex data modeling and migrations
• Clear written communicator that prefers emails to meetings
• Portfolio showing systematic, well-structured work

Bonus Points

• Experience building AI-powered tools (RAG, LLM, etc.)
• Experience building ERP/CRM systems
• React/Next.js familiarity
• Business process automation experience
• Data integration and ETL knowledge
• Mad `/giphy` skills on Slack (or a desire to learn)

The Environment

• Stable, focused work environment
• Protected development time
• Regular, predictable schedule
• Email > meetings

Join Axelar’s Developer Experience team, a team dedicated to enhancing the experience of developers building on Axelar. As a Full Stack Engineer, you’ll play a pivotal role in the redesign of the ITS Portal, ensuring it scales seamlessly for cross-chain integrations. This fully remote role offers the opportunity to collaborate globally in a fast-paced, startup environment.

Your Responsibilities

• Redesign the code structure of the ITS Portal to support cross-chain integrations, optimizing for scalability and maintainability.
• Collaborate with cross-functional engineering teams to ensure seamless integration with Axelar’s blockchain infrastructure.
• Implement and enhance UX/UI to create intuitive and user-friendly developer tools.
• Write clean, efficient, and well-documented code for both frontend and backend systems.
• Perform contract calls and integrate Solidity smart contracts into the ITS Portal.
• Debug, troubleshoot, and maintain existing code to ensure reliability and performance.
• Stay updated with the latest Web3 technologies and trends, applying them to enhance Axelar’s developer tools.

Your Profile

• 3-5 years of experience as a Full Stack Engineer within Web3.
• Experience and familiarity with DeFi products.
• Proficiency in modern JavaScript frameworks (e.g., React, Next.js, Node.js) and backend technologies.
• Strong understanding of UX/UI principles, with the ability to deliver polished, user-centric interfaces.
• Proven experience in fast-paced, startup environments, with the ability to adapt and deliver.
• Excellent problem-solving skills, strong collaboration abilities, and a proactive, ownership-driven mindset.

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.

Axelar has raised over $100 million from leading VCs including DCVC, Galaxy, Polychain, Dragonfly, Coinbase, and more. Its erse partner ecosystem spans industry heavyweights such as Ripple, Circle, dYdX, Uniswap, JPMorgan, Deutsche Bank, Microsoft, and others—underscoring Axelar’s unique market position and opportunity in unifying stacks between traditional finance and decentralized ecosystems. Axelar protocol was founded by Sergey Gorbunov (MIT PhD, UWaterloo Professor) and Georgios Vlachos (MIT MSc, Math Gold Medalist), who previously helped to build and launch Algorand.

Axelar is seeking a Developer Relations Specialist to join our Developer Experience team. In this role, you’ll provide technical support to developers building on Axelar, assist in creating technical documentation, and contribute code to our projects. This fully remote position offers a unique opportunity to engage with the global developer community and enhance their experience in the Web3 space.

Your responsibilities

• Serve as a primary technical point of contact for developers, providing support and troubleshooting assistance.
• Contribute to Axelar’s codebase, improving tools and resources for developers.
• Create and maintain comprehensive technical documentation, tutorials, and guides to facilitate developer onboarding.
• Collaborate with the Developer Experience team to identify pain points and enhance Axelar’s developer tools and resources.
• Engage with the developer community through forums, events, and social platforms to gather feedback and foster strong relationships.
• Support the planning and delivery of developer-focused workshops, webinars, and events.

Your profile

• 3+ years of experience in a Developer Relations role within Web3.
• Experience and understanding of DeFi Products.
• Familiarity with Solidity and Javascript.
• Strong coding abilities, with a focus on contributing to production codebases.
• Excellent communication skills, with the ability to translate complex technical concepts into accessible content.
• Proven experience creating technical documentation and supporting developer onboarding.
• A collaborative, self-starter attitude with a passion for empowering developers and building communities.
• Knowledge of Axelar’s ecosystem and cross-chain interoperability is a plus.

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.

Axelar has raised over $100 million from leading VCs including DCVC, Galaxy, Polychain, Dragonfly, Coinbase, and more. Its erse partner ecosystem spans industry heavyweights such as Ripple, Circle, dYdX, Uniswap, JPMorgan, Deutsche Bank, Microsoft, and others—underscoring Axelar’s unique market position and opportunity in unifying stacks between traditional finance and decentralized ecosystems. Axelar protocol was founded by Sergey Gorbunov (MIT PhD, UWaterloo Professor) and Georgios Vlachos (MIT MSc, Math Gold Medalist), who previously helped to build and launch Algorand.

HackerRank is hiring a remote Senior IT Administrator. This is a full-time position that can be done remotely anywhere in India.

HackerRank - Accelerating the world's innovation.

IMPORTANT TO NOTE:

WHO YOU ARE

**

You’re an experienced Angular developer looking for engaging, enjoyable work. You’d love to level up your skills working in different environments and get excited about seeing your projects in the real world. You like problem-solving and having a team with whom you can brainstorm simple solutions to complex problems.  

In your career so far, you’ve built: 

• 5+ years of professional experience developing single-page applications
• Strong JavaScript skills
• Experience in modern Angular versions; 16+ preferred
• Solid understanding of TypeScript and RxJS
• 2+ years experience with state management patterns and libraries; NgRx or similar reducer-based state management
• A solid background in Modern Front End Development, including JS frameworks 
• Strong communication and interpersonal skills 
• A good understanding of Computer Science (CS degree or equivalent knowledge)

WHAT YOU’LL DO AT BITOVI

Develop. You’ll get to work in a culture that values quality over quantity and collaboration over cowboy coding.  Your time will be spent on client projects doing development.  The development work might include:

• Angular Upgrades 
• Monorepos and Micro Frontend Architecture
• Adopting Reactive Programming 
• State Management
• Implementing Modern Tooling like NX, Custom Angular Schematics 
• Giving Angular, Typescript, and RxJs Training 
• Building Framework-Agnostic Web Components
• Performing Codebase Audits & Resolving Performance Issues 
• Ionic Applications 
• Working on Angular ecosystem open source tooling

Consult. You’ll interface with clients daily to understand their needs, gather information, and update them on the progress of the projects. 

Travel. Our development team travels to meet with our clients in person. Travel for this project role is not planned, however that could change.

You’ll fit in well at Bitovi if you are: 

• Interested in development best practices 
• Experienced in contributing to or using open source projects 
• Flexible enough to work well autonomously or as part of a larger team 
• Always developing new skills, trying out new technology, and testing new ideas 
• Comfortable and confident working with clients directly 

WHAT WE OFFER

First and foremost: you’ll get to work with a talented team who supports and challenges one another to do their most exceptional work.   This is an hourly contract role with the opportunity to evolve into a long-term opportunity.

HOW TO APPLY

Please submit a resume or share your LinkedIn Profile.   In addition, please take a few minutes to answer the required questions in the application.  We read through all applications manually!

Position: Data Engineer 

Location: Remote

Reports To: CEO

The Opportunity:

 As a Data Engineer, you'll develop and optimize the data systems that power our applications. Initially, you'll focus on geospatial data projects, building scalable pipelines and robust back-end services to handle location-based datasets. As you grow with us, you'll expand into other complex data domains, ensuring seamless integration across our tech stack. Working closely with our development team, you'll help architect high-performance solutions that handle erse datasets efficiently and reliably. We're seeking someone who can not only excel at data engineering fundamentals but also adapt their skills to new domains as our client needs evolve.

Success Outcomes:

Design and Implement Scalable Data Solutions You will develop back-end systems that handle large datasets and create APIs that integrate these data systems with front-end applications.

Build and maintain scalable ETL pipelines (Extract, Transform, Load) to process and manage data efficiently.

Design and implement data models and schemas that support business needs.

Develop and optimize RESTful APIs for seamless data flow across applications.

**2. Optimize Data Performance

 You will ensure that data systems perform efficiently, especially when dealing with large-scale datasets, and that they meet the required performance standards.

Key Responsibilities:

Optimize database performance using indexing, query optimization, and caching strategies.

Implement real-time data processing solutions to handle high-volume data streams effectively.

Ensure data integrity and consistency across distributed systems.

Collaborate and Learn New Technologies

 You will collaborate with cross-functional teams, including front-end developers and product managers, to deliver end-to-end solutions. You will also have the opportunity to learn new technologies, including geospatial systems, if they align with project goals.

Key Responsibilities:

Work closely with front-end teams to ensure smooth integration of data with the user interface.

Participate in code reviews and contribute to team knowledge sharing.

Continuously learn and adapt to emerging technologies and industry trends.

Who You Are:

• You have strong data engineering experience and development skills

• You work effectively with back-end technologies like Node.js, including data processing frameworks

• You're constantly learning and applying new approaches to solve complex data challenges

• You thrive in environments that demand high collaboration and teamwork

• You focus on creating maintainable, scalable data solutions

• *Required Qualifications:**

• Strong experience with back-end development, including working with Node.js, or similar technologies.

• Solid understanding of data pipelines, ETL processes, and data transformation.

• Experience designing and implementing RESTful APIs and working with databases (SQL/NoSQL).

• Proficiency in optimizing performance for large datasets, including indexing, caching, and query optimization.

• Familiarity with data visualization and integrating data into user interfaces.

• Experience with Git and collaborative development workflows.

• *Nice-to-Have Skills:**

• Geospatial expertise (e.g., experience with PostGIS, GeoJSON, and geospatial data integration).

• Familiarity with cloud platforms (AWS, Azure) and containerization technologies (Docker, Kubernetes).

• Experience with real-time data processing and stream processing tools.

• *Soft Skills:**

• Strong analytical and problem-solving skills, with attention to detail.

• Excellent communication skills and ability to work effectively in cross-functional teams.

• Ability to learn quickly and adapt to new technologies and methodologies.

• Strong collaboration skills and a desire to contribute to a positive team culture.

 We're growing quickly, which means you'll face interesting technical challenges and have real opportunities to shape our future. If you're excited about building meaningful solutions while growing with a collaborative team, we'd love to talk.

Okta is hiring a remote Entry-level Technical Writer. This is a full-time position that can be done remotely anywhere in Canada.

Okta - The identity company that stands for trust.

Anagram is hiring a remote QA Engineer. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

Anagram - Insurance billing simplified.

Spiral is looking to hire a Spiral Bitcoin Wizard to join their team. This is a full-time position that is remote or can be based in San Francisco CA.

We’re looking for a Senior React Native Developer to join our team at Private.Ki. We’re a fully funded remote startup building a secure 🔑 messaging system with revolutionary features from the ground up. We're an international team comprising of (at the moment) 5 nationalities in 3 countries. Join us & work anywhere!

💼 Full-time position | Fully remote | Long-term contract

What We Need (Senior Level Experience):

• React Native
• React Native Web
• TypeScript
• Expo
• WebSockets
• Testing skills (unit, integration, e2e)
• Understanding of CI/CD pipelines

Bonus Points If You Know

• Django
• Postgres
• PGP

Why Join Us?

🌍 Fully Remote – Work from anywhere, no commute required.

Salary and compensation

Benefits

🌎 Distributed team

⏰ Async

🚑 Medical insurance

🏖 Paid time off

🏔 Company retreats

🏬 Coworking budget

📚 Learning budget

🥧 Pay in crypto

👀 No monitoring system

🚫 No politics at work

🎅 We hire old (and young)

VDEX is seeking a skilled and dedicated GoLang engineer to play an instrumental role in advancing our cutting-edge cryptography and implementing them in real applications.

Responsibilities:

• Build and maintain a Go-based decentralized exchange.
• Manage DEX-Ethereum deposits, which require an understanding of Solidity.
• Understand a complex peer-to-peer cryptographic system.
• Implement secure on-chain verification processes and manage efficient off-chain computations.
• Design, build, and maintain secure, efficient, and scalable blockchain infrastructure.

Requirements:

• Strong proficiency in GoLang and Solidity.
• Knowledge of cryptographic primitives.
• Extensive experience with blockchain technologies, smart contract development, and security.
• Understanding of Zero-Knowledge Proofs, Multi-Party Computations, commitment, and signature schemes.

Offering:

• Competitive salary
• Generous equity

Website

"

Gander is building the next generation of AI technology for the aviation industry (usegander.com). Our products help aviation operators coordinate maintenance, fleet availability, airport operations, and crew scheduling. We are looking for a founding engineer (who can grow into a CTO role) to build new products from 0 to 1. This role will be absolutely critical to the success of Gander and as such will get significant equity and significant responsibility for product execution. This role will also be customer and investor facing, getting to work directly with our customers and key-stakeholders.

Job Responsibilities:

* Create Great Software: Take product requirements and turn them into beautiful, reliable, and high quality software and multiply your impact with code-gen tools

Key Requirements

* Evidence of End-End Product Ownership: Experience building all parts of software from front-end to back-end to cloud deployment

",

"

Gander is building the next generation of AI technology for the aviation industry (usegander.com). Our products help aviation operators coordinate maintenance, fleet availability, airport operations, and crew scheduling. We are looking for a founding engineer (who can grow into a CTO role) to build new products from 0 to 1. This role will be absolutely critical to the success of Gander and as such will get significant equity and significant responsibility for product execution. This role will also be customer and investor facing, getting to work directly with our customers and key-stakeholders.

Job Responsibilities:

* Create Great Software: Take product requirements and turn them into beautiful, reliable, and high quality software and multiply your impact with code-gen tools

Key Requirements

* Evidence of End-End Product Ownership: Experience building all parts of software from front-end to back-end to cloud deployment

",

TL;DR:

• Position: Experienced Laravel dev (5+ years) who can also navigate a Vue 3 frontend when needed.
• Project: Stable, long-term, fully remote.
• Hours: Ideally full-time, but part-time can work too.
• Compensation: $60k-$90k/year or around $50/hour (negotiable, heavily dependent on skills & experience).
• Why Join: You’ll help modernize and expand a platform (16Personalities) that has already impacted hundreds of millions of people.

What You’ll Do 

Improve Testing & Modernize Legacy Code

• Increase test coverage (currently using PHPUnit; open to alternatives). 
• Refactor older Laravel code to align with modern best practices and the L11 structure. 
• Integrate robust testing into our deployment pipelines.

Build New Features

• Develop new functionality rapidly while maintaining clean, maintainable code.
• Optimize database queries and cache strategies.
• Collaborate closely with the team to ensure smooth feature rollouts.

Dive into the Full Stack (When Needed)

• Primary focus: Laravel backend. 
• Occasionally jump into the Vue 3 frontend to debug or confirm data flow. 
• You should be comfortable switching contexts to ensure end-to-end coherence. 

Embrace AI Tools

• Explore how AI can speed up your own development or test writing. 
• Assist with separate mini-projects involving AI model querying, message batching, output processing etc.

Who You Are 

Seasoned Laravel Dev

• 5+ years of practical Laravel experience.
• Well-versed in the latest Laravel versions, writing elegant, clear, performant code.

Some Vue 3 Knowledge

• At least a couple of years using Vue 2/3.
• Able to navigate frontend components as needed (no design work, just enough to fix issues or align data).

Independent & Reliable

• Fully remote means you're responsible for your schedule.
• Deliver on time without needing constant follow-ups.
• Communicate clearly, keep the team in the loop, and “own your s**t.”

Agile & Curious

• Thrive in a fast-paced, evolving environment.
• Take pride in your work; constantly seek ways to improve the code and test coverage.

Fun to Work With

• You’re intellectually honest, and you can argue your viewpoint while staying open to others.
• You have a sense of humor and a life outside of code.  

What We Offer 

Remote Setup

• Work from anywhere, on your own schedule.
• Join a small, friendly, and driven team that values creativity and independence.

Fair Compensation

• $60k–$90k/year salary range (negotiable based on your skill set, plus any rarer expertise you bring).
• Part-time is around $50/hour. 
• If you’re exceptional, we’re open to discussing more.

Meaningful Work

• We’ve helped hundreds of millions of people understand themselves better over the past 10+ years.
• What you do won’t be lost in yet another short-lived startup idea - your work will have a real, lasting impact.

Creative Autonomy

• Operate in a quality-first, agile environment with freedom to innovate.
• Room to propose and implement process improvements.

Potential for Growth

• We value learning and will happily consider new tools and methods you propose.
• As we expand, so do opportunities for leadership or tackling more complex full-stack tasks.

Interested? Please fill out the linked form so we can learn more about you.

What to Expect Next:

• We’ll review your application and reach out if it’s a good fit.
• An initial chat to understand your experience and see if we mesh well.
• Possibly a short technical interview or a quick code test.
• A final talk about terms and next steps.

Gladly is hiring a remote Developer Support Engineer - US. This is a full-time position that can be done remotely anywhere in the United States.

Gladly - The world's only ticketless customer service platform.