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About CoW DAO

CoW DAO is on a mission to protect Ethereum users from MEV and optimize trade execution across DeFi. We achieve this through the CoW Protocol, CoW Swap (a leading intent-based DEX aggregator), and the innovative MEV Blocker, which together help secure, aggregate, and route trades for optimal outcomes. We also fund values-aligned projects via the CoW Grants Program.

CoW Protocol is consistently ranked among the top DEX aggregators by monthly volume and is the largest intent-based exchange. Our MEV Blocker protects trades from harmful MEV extraction and is integrated across the Ethereum ecosystem. The CoW AMM is the only live AMM designed to protect liquidity providers from LVR (loss-versus-rebalancing).

With over 100 open-source repositories on Dune Analytics dashboard showcases billions in cumulative trading volume and a rapidly growing user base. As we continue to scale, CoW DAO remains at the forefront of DeFi innovation, prioritizing security, efficiency, and decentralization.

Learn more

• Location: Fully remote (Preference for Europe or remote ±4 hours CEST)
• Contract Type: Full-time contractor
• Note: Please note we are not hiring from the US, Australia, or New Zealand

About the role

At CoW DAO data plays a central role in how we understand on-chain activity and operate our fair combinatory auction system.

We’re looking for a Data Engineer who’s excited to e deep into blockchain data (Ethereum and other L1/L2s), enrich it with insights from our off-chain auction system, and build the pipelines and infrastructure to support operations and analytics. This is a hands-on role where you’ll work across teams, design scalable systems, and make high-quality data accessible and actionable across the organization.

If you thrive in a fast-moving environment, love working with complex datasets, and want to shape the data foundation of a leading DeFi protocol, we’d love to hear from you.

What you’ll do

• Collaborate with teams across the company to understand their data needs and provide actionable insights
• Design, build, and maintain robust data pipelines and infrastructure for ingesting and processing on-chain and off-chain data
• Ensure data quality, reliability, and discoverability through testing, monitoring, and documentation
• Create tools and systems that make it easy to access, query, and visualize data (using tools like Redash, Metabase, or Looker)
• Keep an eye on the evolving blockchain data ecosystem—experiment with new tools and techniques to stay ahead
• Own your work end-to-end: from initial idea to deployment and maintenance

Who you are

• Solid experience designing and maintaining scalable data architectures (data lakes, warehouses, pipelines)
• Strong coding skills in Python and SQL
• Comfortable working with blockchain data providers and APIs (e.g. Dune, Etherscan, CoinGecko)
• Familiar with decoding Ethereum transactions and simulation tools (e.g. Tenderly, Phalcon)
• Experience with modern data orchestration frameworks (Dagster, Airflow, or Prefect)
• You write clean, tested, and well-reviewed code and follow best practices for deployment and monitoring
• You’re a self-starter, collaborative, and not afraid to take ownership

Nice to Have

• Familiarity with cloud platforms (AWS, GCP, etc.)
• Previous experience in a startup or high-growth environment
• Experience contributing to or using open-source data/analytics tools in the Web3 space

## What We Can Offer You

• Flexible work environment: Join our hub in Lisbon whenever you want or work remotely
• Token plan: Have a stake in our mission and shape the future of CoW DAO
• Periodic gatherings: Meet your teammates in person during regular team retreats
• Conference allocation: Stay up to date with the latest in Web3 using our conference budget
• Learning budget: Support for personal and professional development
• Hardware budget: Set yourself up with the tools you need
• Flat hierarchies: Have more ownership and less red tape
• Flexible time off: Balance your personal and work life
• Make an impact: Your contributions directly influence the direction and success of the protocol
• Growth: Take initiative, own projects, and accelerate your learning and growth

Referral Program

Earn 4,000 USDC/USD through our refer-to-earn program. More details here

Culture

Life within the CoW Protocol is an incredible adventure! We take pride in our collaborative approach, embracing autonomy and fostering a culture of big thinking and continuous growth. We value impact, ownership, simplicity, and team spirit. Plus, we’re all about feedback, coming together, and enjoying the journey along the way!

At CoW Protocol, we strive to create a space where everyone feels included and empowered. We believe that our products and services benefit from our erse backgrounds and experiences. All qualified applicants are considered for positions regardless of race, ethnic origin, age, religion or belief, marital status, gender identification, sexual orientation, or physical ability.

QA Engineer | Europe | Remote 

We are BVGroup a dynamic team that's shaping the future of online sport betting and gaming. We're dedicated to fostering a culture of innovation and excellence and as a leading global brand, we're committed to delivering top-tier products and services to our customers. 

Purpose of the role: 

As a QA Engineer you will be responsible for testing specific features on the companies staff tools, intranet, websites and mobile apps, focusing on helping the team to produce elegant and bug free solutions built to product specification. Daily routines include manual testing as well as participating, writing, extending, maintaining and running automated tests.  

You will work with product, development and business teams to identify appropriate test coverage during development, feature, integration and regression stages. You’re quick to perform impact assessment on proposed changes to ensure that all dependencies, issues and risks have been correctly identified and are proactively monitored and managed. 

Key Responsibilities:  

• Maintain and improve test suites.  

• Execute test cases during exploratory, regression, and integration testing.  

• Reporting, verification, and tracking of bugs.  

• Generate test execution reports when needed.  

• Provide feedback to developers on reported bugs. Use your domain of expertise to optimize testing strategies and approaches.  

Experience and skills that are important for success in this role:  

• Strong understanding of software testing best practices and industry standards.  

• Strong and proven experience with manual testing.  

• Solid at designing tests suits for new features.  

• Experienced with testing frameworks.  

• Demonstrated experience of applying and understanding software testing fundamentals.  

• Strong attention to detail and problem-solving skills.  

• Be adaptable to changing product specifications, priorities, and schedules.  

• Good written and verbal communication skills with both technical and non-technical team members.  

• Up-to-date and capable of keeping the pace with the latest trends and technologies.  

• You are hands on, passionate, persistent, creative, and humble. You get things done. 

How we hire: 

Our interviews are a two-way process, and we want you to have the time and opportunity to get to know us, as much as we are getting to know you! Our interviews are conversational, and we want to get the best from you, so come at us with questions and be curious. 

In the event that we receive sufficient applications for the role, this vacancy may be subject to early closure. Therefore, if you are interested, please submit your application as early as possible.

Java Developer | Europe | Remote 

We are BVGroup a dynamic team that's shaping the future of online sport betting and gaming. We're dedicated to fostering a culture of innovation and excellence and as a leading global brand, we're committed to delivering top-tier products and services to our customers. 

Java Developers at BVGroup are encouraged, and have freedom, to make a real difference in the world of sports betting and egaming. As one of them, you will leverage your skills and experience to solve real and often complex problems with performant teams and code.  

We are now looking for experienced and forward-thinking Java Developers who are independent and inventive, have a hunger to learn, share knowledge, and can thrive in an energising technology environment that delivers great products and provides great developer experience.  

Our Marketing Technologies team works closely with other software engineering teams and product managers to build and enhance a best-in-breed marketing platform crucial to the continued growth of the organisation. You will work in a small agile development team of highly motivated professionals that are continuously seeking challenges, working closely with business analysts and testing team to deliver a variety of projects, small business changes and third line support.  

You need to be able to communicate and articulate your ideas clearly and your focus must be on the timely delivery of quality and stable implementations that meet with the specified requirements with good test coverage.  

**

• Create and maintain quality software using best practices in a continuous integration and delivery environment. 

• Deliver implementations in accordance with coding standards and conventions. 

• Own new features from inception to production release. 

• Maintain and improve existing applications. 

• Rewrite, refactor and perfect code. 

• Find creative and simple solutions to challenging problems. 

• Participate in technical analysis. 

• Conduct meaningful code reviews. 

• Provide detailed estimates and report on progress. 

• Interact with 3rd party providers for external API integrations. 

• Grow a production environment in a maintainable, reliable, monitored way. 

• Commit to maintain systems operations 24/7. 

**

• 3 - 5 years professional experience with Java (including latest versions). 

• Solid experience with spring-boot. 

• Experience with service-oriented architecture. 

• Experience with concurrency and high load service applications. 

• Experience with event-driven architectures and asynchronous communications between systems. 

• Experience with relational and document oriented databases. 

• Continuous integrations and integration tools. 

• Working experience with cloud technologies (aws, gcp, docker, kubernetes, spring-cloud). 

• Experience with unit test and mocking frameworks. 

• You have interest in working in a very cross-functional team that touches on many of the core systems and user flows.  

• A solid engineer – you find something magical about solving problems with elegant but simple solutions. You have deep knowledge of OOP and design patterns and are a good problem solver with attention to detail and critical thinking skills.  

• A good communicator – you communicate enthusiastically, clearly and concisely with both technical and non-technical staff.  

• A keen learner – you are up-to-date and capable of keeping the pace with the latest trends and technologies. 

• Bias towards action. You are hands on, passionate, persistent, creative and humble. You get things done. 

**

Our interviews are a two-way process, and we want you to have the time and opportunity to get to know us, as much as we are getting to know you! Our interviews are conversational, and we want to get the best from you, so come at us with questions and be curious. 

About Vac

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

Vac’s R&D Service Units are integral to supporting IFT projects by researching and developing base components and secure, unbiased protocols.

With the IFT’s extensive use of the Nim ecosystem, the Vac Nim Service Unit focuses on the development and maintenance of Nim tooling and core libraries essential for IFT projects. The Nim unit works on critical tools in the Nim ecosystem, including the Nim compiler, Nimble (package manager), and nim-suggest, ensuring they are efficient, reliable, and up-to-date.

The Nim unit further plans to maintain core libraries developed by IFT, such as Chronos.

The mandate of the Nim unit also includes providing support to IFT projects regarding the use of Nim, identifying and addressing specific project needs and demands related to the Nim ecosystem.

The role

We’re looking for a skilled Nim developer to help drive the development and maintenance of Nimble, the Nim language server, and core Nim libraries across a range of IFT projects. In this role, you’ll work closely with project teams to consolidate, report, and resolve Nim-related issues and bugs, while also contributing to the ongoing improvement of developer tooling and the Nim ecosystem.

The ideal candidate has strong experience with Nim, a solid grasp of language tooling and core programming concepts, and enjoys collaborating across teams to deliver robust solutions. If you’re passionate about open-source development, enjoy tackling complex technical challenges, and want to help shape the future of Nim at IFT, we’d love to hear from you.

Key responsibilities

• Contribute to the ongoing development and maintenance of Nimble, the official package manager for Nim, ensuring robust dependency management and a smooth developer experience.
• Address feature requests, resolve bugs, and improve documentation for Nimble to support the Nim ecosystem.
• Develop, maintain, and extend the Nim language server to improve IDE integration, code completion, error diagnostics, and overall tooling for Nim developers.
• Help maintain and evolve Nim core libraries.
• Collaborate with users and contributors to identify and implement enhancements that streamline the developer workflow
• Monitor, collect, and consolidate Nim-related issues and bugs arising in various IFT projects, and either report or directly address and resolve these issues as appropriate.
• Act as a liaison between IFT project teams and the Nim core development community, ensuring that feedback and requirements are clearly communicated and tracked.

You ideally will have

• Proficiency in Nim programming language, with hands-on experience developing and maintaining Nim projects.
• Experience with C, C++, Rust, or similar, especially in systems or embedded programming contexts.
• Solid understanding of data structures and algorithms.
• Experience with concepts such as parsing, lexing, and semantic analysis, especially as they relate to compilers or language tooling.
• Familiarity with Nim’s standard library and ecosystem, including asynchronous programming, networking, and multi-threaded programming.
• Experience maintaining or contributing to package managers or similar developer tooling (e.g., Nimble).
• Understanding of language server protocols and experience working with or developing language servers.
• Proficiency in Git.
• Strong debugging and testing skills, with the ability to identify, report, and resolve issues across multiple projects.
• Effective communication skills for collaborating across teams and reporting on bugs and issues.
• Problem-solving ability and attention to detail

Bonus points

• Experience working for an open-source organization.
• Knowledge of type theory and programming language foundations.
• Experience with peer-to-peer technologies, blockchain, or cryptography.
• Background in IDE tooling, language tooling, or developer experience improvements

Hiring process

• Interview with our POps team
• Interview with team member from the Vac team
• Pair programming with team member from the Vac Nim unit
• Interview with Vac team lead

Compensation

The expected compensation range for this role is $100,000 - $150,000 USD annually (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.

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 LOCATION, 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.

Currently we have different Senior positions for Full-stack Developers: React & Ruby and Ruby & Node, React & Python.

Requirements - Senior React & Ruby:

• 5+ years of software development experience
• 3+ years of commercial experience with React.js and Ruby and Ruby on Rails

Requirements - Senior Ruby & Node (GMT -5:00) Eastern Time (US & Canada), Bogotá, Lima, or other timezones with at least 4 hours of overlap per day:

• 7+ years of experience with Ruby and Ruby on Rails
• 5+ years of experience with Node.js
• 2+ years of experience working for SaaS companies is a strong plus
• Experience working with relational databases, particularly PostgreSQL
• Understanding of RESTful API design and development
• Exposure to Typescript in a development environment
• Knowledge of MongoDB or other NoSQL databases
• Ability and motivation to quickly learn new tools, technologies, and systems
• Strong problem-solving skills and attention to detail

Requirements Senior React & Python:

• 4+ years of software development experience.
• 3+ years of commercial experience with React.js and Python.
• 3+ years of experience with AWS, Django and TypeScript is a must.

Other Requirements:

• 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 Full-Stack Developers, so if you have 4+ years of commercial experience in software development and you are fluent with AI Engineering, Python & LLM & AWS/GCP/Azure, UI/UX & Figma, Blockchain: Web3, Wordpress & Figma, Shopify & JavaScript, 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.

Salary and compensation

Benefits

🌎 Distributed team

⏰ Async

🚫 No politics at work

🎅 We hire old (and young)

Original job post link:

https://garden3d.notion.site/Senior-Account-Lead-1fc131fea2c7809ca54ee4bb35e67d31

🌎 About garden3d

We are a worker-owned creative collective, innovating on everything from brands and IRL communities to IoT devices and cross-platform apps. We share profit, open source everything, spin out new businesses, and invest in exciting ideas through financial and/or in-kind contributions.

Our client roster includes Google, Stripe, Figma, Hinge, Black Socialists in America, ACLU, Pratt, Parsons, Mozilla, The Nobel Prize, MIT, Gnosis, Etsy & Gagosian. We’re the software team behind innovative products like The Light Phone & Mill, and we a global, decentralized community space collective called Index Space.

We think of our garden3d as collective for creative people, prioritizing a happy, talented, and erse studio culture. We work on projects that bring value to our world, and we balance deep care for the work we do with a genuine curiosity about life outside of our jobs.

⛰️The Account Lead Role

As garden3d’s Senior Account Lead, you’ll own the end-to-end client experience and revenue portfolio for our 30-person, ~$6 MM/year collective specializing in digital design and development.

You will play a pivotal role in driving account growth, ensuring client satisfaction, and maintaining project profitability. This role is perfect for a strategic relationship-builder with a keen eye for detail and extensive experience managing complex engagements.

Beyond high-level account oversight, you’ll develop multi-year growth plans, lead executive-level conversations, and implement clear governance and change-management processes to keep projects on time, on budget, and aligned with business goals. You’ll partner closely with our Founder and our cross-functional Team Leads to translate garden3d’s strategic vision into tangible results for our clients—and our bottom line.

💸 Compensation

At garden3d, we believe that those who drive the shoulder the most responsibility, and create the greatest impact should be paid accordingly.

As such — this role operates like a partner at a law firm, offering a commission-based compensation model that grows alongside the success one has in the role. This structure recognizes deep expertise and accountability, and also encourages knowledge-sharing and mentorship, as veteran colleagues invest in developing high-performing teammates.

→ The Account Lead role is paid 8% of all gross revenue that they steward from the new business to completion, and beyond — for up to a year per project. Additionally, this role will receive a idend in our Quarterly Profit Share.

Our business receives around 100 — 150 leads per year. Based on our current revenue patterns, a highly accountable, capable and ambitious senior Account Lead who’s built a full roster of client projects should expect to make between $150,000 — $300,000+ USD per year.

Responsibilities:

💸Stewardship of New Business

Our Senior Account Lead champions every stage of the sales cycle—from outbound prospecting and first outreach through handoff to delivery—ensuring a seamless transition for the client.

By owning pipeline health, crafting compelling proposals, and collaborating with marketing and delivery teams, they safeguard both our brand reputation and revenue goals.

🏷️ Consultative Selling and Negotiation

Leveraging deep industry insight, they diagnose client challenges and articulate tailored solutions that align with business outcomes. Through value-based frameworks and skillful contract negotiations, they secure agreements that maximize ROI for clients and profitability for garden3d.

🗣️ Proactive Client Engagement

Establishing a regular cadence of check-ins, supporting our Team Leads to anticipate needs, surface risks, and celebrate milestones. This forward-leaning communication style builds trust, keeps projects on track, and turns clients into advocates.

🖇️ Transparent Scope & Change Management

By documenting deliverables in a paper trail and enforcing formal change-request processes, they ensure every enhancement is tied to updated timelines, budgets, and resource allocations—eliminating surprises and maintaining alignment.

👔 Executive-level Relationship Management

They engage C-suite and senior stakeholders as trusted advisors, translating technical roadmaps into strategic business imperatives. Their credibility at the top table opens doors for cross-sell opportunities and multi-year engagements.

⚠️ Escalation & Issue Resolution

Adhering to a “no-surprises” pledge, they own any client or team concern—whether a payment discrepancy or delivery snag—and mobilize the right experts to resolve it within 48 hours. Post-mortems on each incident drive continuous improvement.

🔁 Operational Excellence & Process Improvement

Championing best practices in CRM, resource planning, and forecasting, they refine workflows to boost efficiency and accuracy. By analyzing performance metrics and leading retrospectives, they iterate our playbooks to deliver ever-higher quality.

🌭 Culture

They model garden3d’s values of partnership, curiosity, and accountability, fostering an environment where every team member feels empowered and supported. Through mentorship and recognition, they knit together erse talents into a cohesive, high-performing team.

How we Interview

After you submit your application, a member of our team will reach out. Our interview process starts with an intro call to answer any questions you have about the role and to learn a bit more about your experience and interests.

From there, we’ll follow up with a panel interview call where you get to meet a few members of our team, to openly discuss some of our challenges and ensure your skills and interests align with where we’re going as a business.

For qualified candidates, the process wraps with a reference call, and an offer to follow.

Qualifications:

🔑 Must have:

• Demonstrated new business success in a digital design, development agency (or similar)
• Minimum of $1M — $2.5M in closed net-new revenue over the past 3 years, across multiple verticals
• Deep understanding of digital product lifecycles (UX/UI, front-end, back-end, mobile, DevOps)
• Complete fluency in all parts of day to day project management like documenting deliverables, tracking hours, QA checkpoints, pushing back on out of scope requests
• Proven ability to navigate complex RFP processes, negotiate contract terms, and close enterprise-scale deals
• Expert use of CRM and pipeline-management platforms (e.g. Salesforce, HubSpot)
• Comfortable leveraging data analytics and forecasting to optimize resource allocation and pricing strategies
• Exceptional storytelling ability, crafting compelling proposals and pitches
• Polished in both written and verbal communication, with experience leading client workshops and design-thinking sessions
• Located between Pacific Standard Time (UTC-8) and Central European Time (UTC+2)

🧁 Nice-to-have:

• Fluency in lead prospecting and outbound lead generation
• Up-to-date knowledge of emerging technologies (e.g. AI/ML, AR/VR, headless CMS) and how they drive competitive advantage
• Strong network of contacts across Fortune 500s, fast-growth startups, or key design/development decision-makers
• Credibility engaging C-suite stakeholders and acting as a trusted advisor
• Experience with solution-based, value-selling methodologies (e.g. MEDDIC, Challenger Sale)
• Skill in crafting and executing multi-year growth plans that tie digital design and development services to clients’ business KPIs
• Experience sending invoices to clients and tracking complex change orders and context
• Experience in a software development, design consultancy or other creative industry
• Familiarity with project-based accounting and financial metrics such as utilization and profitability
• Previous experience working with outside legal counsel on financial aspects of contracts (e.g., NDAs, MSAs)
• A passion for working in a collaborative, creative environment

How we work

We believe that there’s a better balance between the poles of freelancing & full-time, and for that reason, Sanctuary works differently to most shops:

• Transparency & Ownership: We release our Profit & Loss statements to the community each year, open source our best ideas, and talk business & money with everyone in the company. We’re proud to run our business with integrity, and for that reason, we share everything with our team & community.
• **150% Carbon Negative:** Our studio offsets 150% of the carbon we use to do business each year, dated back to our founding in 2015. We turn down work that is not in line with our morals, and we encourage our peers to do the same. We were certified climate neutral earlier this year.
• **Strong Morals:** Since our founding, we've turned down somewhere between $1mm - $2mm of work that didn't meet our moral standards. (Most of that was DTC brands that can't show a valid sustainability initiative).
• Async & Decentralized: We use tools optimized for calm, thoughtful communication, and opt for async whenever possible. We fight hard to maintain our focus time.
• Remote Friendly: Our company is fluent in remote work, making our workplace more decentralized and democratized in the process.
• Ideas & Products: In our spare studio time, we work to build our own open source or internal products to ersify & bolster our income. We create amazing technology products for our clients, so why not for the studio?

Please click this link or copy the URL to apply by telling us a bit more about your interest in the role:

https://www.notion.so/1fc131fea2c78054b148c84dfc9b8655?pvs=4

Salary and compensation

Benefits

🌎 Distributed team

⏰ Async

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

Oddball - We're a high-end boutique dev shop.

As a Frontline Software Support Engineer, you’ll be responsible for working as the first line specialised technical support for all Payara Platform users. You will work closely with our customers at both high-level (architecture, software maintenance, security) and low-level (configuration, code review, troubleshooting) to guarantee successful businesses.

Please visit www.payara.fish/joinus for more details.

Check out our culture page on Instagram @payaraculture

Summary Details

Role: Frontline Software Support Engineer

Senior: Junior

Location: EMEA/South America/Asia (100% Remote)

Compensation: Rate dependent on local market location and experience

Responsibilities

• Provide specialised technical support to Payara Platform users.
• Document resolutions and solutions on the internal Payara systems.
• Work with expert engineers to resolve challenging issues in high-level areas (architecture, security reviews, performance tuning) and assist product management in identifying new features that might benefit users in general.
• Support open-source community by actively engaging in technical discussions on external platforms.
• Assists with the onboarding and offboarding of customers.

Essential Skills & Experience

• 1+ years of Java development experience
• Basic knowledge and experience using Apache Maven
• Demonstrates a basic understanding of web server operations and core principles of application development.
• Proficiency in both written and verbal English communication; other languages will be an added advantage

Desirable Skills & Knowledge

• Previous experience working in software technical support.
• Experience in Java / Jakarta EE Middleware application development and maintenance (e.g., Payara, Glassfish, WebSphere, JBoss, WebLogic, etc.) or application development using Spring Framework or similar environments.
• Experience with DevOps technologies such as Docker, Kubernetes, and Jenkins, along with hands-on usage of cloud platforms including AWS, Azure, and Google Cloud Platform (GCP).

Personal Skills & Behaviours

• Excellent problem solving and analytical skills.
• Team player with strong communication skills
• Ability to think, learn and adapt quickly in challenging situations.
• Effectively collaborates with other colleagues and ensures client satisfaction.
• Commitment to continuous learning, actively seeking opportunities to expand knowledge and stay updated with industry trends and new technologies.
• Strong customer focus, dedicated to understanding client needs and delivering satisfaction.

Essential Qualifications

• Qualifications in Computer Science, Software Engineering or related field.

We are an equal opportunities employer. If you require reasonable adjustments due to a disability, please raise this when invited to an interview, stating the adjustments needed.

Please see our company (Recruitment) Privacy statement available at www.payara.fish

Salary and compensation

Benefits

🌎 Distributed team

🏔 Company retreats

🧘 Mental wellness budget

https://ship.wander.com/

Salary and compensation

Benefits

🌎 Distributed team

⏰ Async

🦷 Dental insurance

🚑 Medical insurance

🏖 Paid time off

💰 Equity compensation

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Uscreen - Sell your videos online.

Discord is hiring a remote SoftwSoftware Engineer, Growth. This is a full-time position that can be done remotely anywhere in the United States.

Discord - The easiest way to talk over voice, video, and text.

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

Chess.com - The world's largest chess community.

Xapo Bank is looking to hire a Platform/DevOps Intern to join their team. This is an internship position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

Linea is looking to hire a Senior Ecosystem Manager - Linea to join their team. This is a full-time position that can be done remotely anywhere in the United States.

Who We Are And What We Do:

Contra is a network of independent creatives, connecting you with the talent and tools to get work underway. Our platform offers all the necessary tools for discovering, hiring, onboarding, managing, and paying flexible talent.

Why Join Contra’s Journey?

Contra is building the platform for the future of work. People, companies, and agencies are looking to adopt more flexible working styles, and we are leading the way, with a network of over 1M freelancers and 50k clients who depend on Contra to work together and collaborate, 100% commission-free. We’ve raised over $44M from top VC’s including NEA, Unusual Ventures and Cowboy Ventures.

About You:

• You understand modern AI systems, products and workflows. You have opinions and taste in these areas, and know how to build polished AI-driven user experiences that delight, not detract.
• You are an excellent, independent problem solver.
• You have high standards for craft, quality, and attention-to-detail for the work that you ship, and motivate others to raise the bar.
• You know how to articulate and balance the tradeoffs of rapid pace exploration and building performant, scalable, reliable, and quality systems.
• You have high standards for verbal and written communication and are experienced at working in a remote organization, preferring to over-communicate and collaborate synchronously when able.
• You thrive in a fast-paced and dynamic environment. Our team knows how to execute and is relentless about our velocity. You smartly use AI to increase your personal velocity, but are experienced enough an engineer on your own to navigate and keep it in check.
• You apply an ownership mentality to everything you ship, and collaborate cross-functionally with other teams to achieve success.
• You dedicate effort to staying up to date with new technologies, patterns, and AI.

In a day at Contra, you’ll probably:

• Contribute to our end-to-end TypeScript, GraphQL, React monorepo. You’ll work across the stack — including our AI stack (LLMs, embeddings, vector search, evals, etc.)
• Contribute to our Vitest/Playwright test suite.
• Participate in the RFC process, building alignment around new database and API schemas and new patterns.
• Participate in all parts of the product development process, like design critiques, code reviews, and cross-functional planning with your team.
• Work on maintaining a tidy home: eliminate technical debt, improve performance, address customer bugs, improve developer experience, etc.

Our Stack:

• Backend: TypeScript, PostgreSQL, GraphQL, NodeJS, Redis, Temporal
• Frontend: React, Relay, PandaCSS
• Data: Airbyte, dbt, Google BigQuery
• DevOps: ArgoCD, Docker, GitHub, Google Cloud Platform, Kubernetes
• Testing: Playwright, Vitest
• Tools: Linear, Mergify, PostHog, Slack, Turbo
• AI: OpenAI, Cursor, Supermaven, CodeRabbit (for code reviews — it’s actually great!)

Total Comp:

• Salary: $170,000 - $200,000 CAD
• Health + dental benefits
• Home Office Budget
• We will provide you with a company laptop on your start date

Interview Process

• Intro Call with Recruiting Team (15-20 minutes)
• Technical Interview with Hiring Manager (45 minutes)
• Culture & Cross-Functional Interview (45 minutes)
• Paid Technical Assessment (3 hours) + Presentation (60 minutes)
  • CTO & Co-Founder
  • Engineering Manager
• Interview with CEO & Co-Founder (30 minutes)

Note: Contra communicates with applicants through @contra.com domains only. We never ask for money from potential employees. For the latest job postings, visit Contra Careers.

Who We Are And What We Do:

Contra is a network of independent creatives, connecting you with the talent and tools to get work underway. Our platform offers all the necessary tools for discovering, hiring, onboarding, managing, and paying flexible talent.

Why Join Contra's Journey?

Contra is building the platform for the future of work. People, companies, and agencies are looking to adopt more flexible working styles, and we are leading the way, with a network of over 1M freelancers and 50k clients who depend on Contra to work together and collaborate, 100% commission-free. We’ve raised over $44M from top VC’s including NEA, Unusual Ventures and Cowboy Ventures.

About You:

• You understand modern AI systems, products and workflows. You have opinions and taste in these areas, and know how to build polished AI-driven user experiences that delight, not detract.
• You are an excellent, independent problem solver.
• You have high standards for craft, quality, and attention-to-detail for the work that you ship, and motivate others to raise the bar.
• You know how to articulate and balance the tradeoffs of rapid pace exploration and building performant, scalable, reliable, and quality systems.
• You have high standards for verbal and written communication and are experienced at working in a remote organization, preferring to over-communicate and collaborate synchronously when able.
• You thrive in a fast-paced and dynamic environment. Our team knows how to execute and is relentless about our velocity. You smartly use AI to increase your personal velocity, but are experienced enough an engineer on your own to navigate and keep it in check.
• You apply an ownership mentality to everything you ship, and collaborate cross-functionally with other teams to achieve success.
• You dedicate effort to staying up to date with new technologies, patterns, and AI.

In a day at Contra, you’ll probably:

• Contribute to our end-to-end TypeScript, GraphQL, React monorepo. You’ll work across the stack — including our AI stack (LLMs, embeddings, vector search, evals, etc.)
• Contribute to our Vitest/Playwright test suite.
• Participate in the RFC process, building alignment around new database and API schemas and new patterns.
• Participate in all parts of the product development process, like design critiques, code reviews, and cross-functional planning with your team.
• Work on maintaining a tidy home: eliminate technical debt, improve performance, address customer bugs, improve developer experience, etc.

Our Stack:

• Backend: TypeScript, PostgreSQL, GraphQL, NodeJS, Redis, Temporal
• Frontend: React, Relay, PandaCSS
• Data: Airbyte, dbt, Google BigQuery
• DevOps: ArgoCD, Docker, GitHub, Google Cloud Platform, Kubernetes
• Testing: Playwright, Vitest
• Tools: Linear, Mergify, PostHog, Slack, Turbo
• AI: OpenAI, Cursor, Supermaven, CodeRabbit (for code reviews — it’s actually great!)

Total Comp:

• Salary: $170,000 - $200,000 CAD
• Health + dental benefits
• Home Office Budget
• We will provide you with a company laptop on your start date

Interview Process

1. Intro Call with Recruiting Team (15-20 minutes)
2. Technical Interview with Hiring Manager (45 minutes)
3. Culture & Cross-Functional Interview (45 minutes)
4. Paid Technical Assessment (3 hours) + Presentation (60 minutes)
   1. CTO & Co-Founder
   2. Engineering Manager
5. Interview with CEO & Co-Founder (30 minutes)

Note: Contra communicates with applicants through @contra.com domains only. We never ask for money from potential employees. For the latest job postings, visit Contra Careers.

Salary and compensation

"

Location: Remote

Company: Merlin AI

About Us: We are building an AI powered ERP for construction companies in the US and are disrupting a massive 30 year old industry. We are a fast-paced startup where things are changing quickly, and design moves rapidly. We are looking for a dedicated and hardworking Frontend React Developer to join our dynamic team.

Key Responsibilities

* Design, develop, and maintain backend systems, APIs, and databases to support our product.

Monitor, troubleshoot, and optimize backend performance and reliability.

Qualifications

Must-Haves:

* Strong foundation in computer science basics, including algorithms, data structures, and distributed systems.

Nice-to-Haves:

* Experience in early-stage startups or building products from scratch.

Exposure to machine learning pipelines, AI agents.

What We Offer:

1. Competitive pay.

Work hours are typically long but you will get a lot of ownership and a chance to try out different technologies, write complex algorithms and see it in production.

",

As a Senior Blockchain Engineer, you will be responsible for designing, developing, and optimizing smart contracts and blockchain infrastructure for our platform. You will work closely with the CPO and product teams, and other engineers to deliver innovative and secure solutions within the DeFi ecosystem.

Technical Leadership & Architecture

• Design and optimize blockchain product architecture with a focus on scalability, security, and performance.
• Develop and improve cross-chain interoperability solutions (cross-chain swaps, bridges, and interconnectivity).
• Lead the development, auditing, and integration of smart contracts within decentralized protocols.
• Design and develop efficient algorithms with a focus on gas optimization.
• Conduct technical research, proof-of-concept (PoC) experiments, and implement best practices in blockchain development.

Team Collaboration & Development Process

• Work closely with product and engineering teams to design optimal blockchain solutions.
• Define and implement effective CI/CD processes for blockchain development.
• Perform code reviews, mentor developers, and enforce best practices in blockchain engineering.
• Collaborate with auditors and cross-functional teams to ensure successful product launches.

Technical Excellence & Innovation

• Continuously monitor emerging blockchain, Web3, and crypto technologies.
• Analyze and address potential attack vectors, ensuring security best practices.
• Optimize blockchain infrastructure to improve performance and reduce transaction costs.
• Engage with blockchain communities, contribute to open-source initiatives, and participate in ecosystem discussions.

Experience Required

• 7+ years of software development experience, with at least 3+ years in blockchain engineering.
• Deep understanding of blockchain ecosystems, smart contracts (Solidity, Yul, EVM), and decentralized applications (dApps).
• Hands-on experience with Ethereum, Layer 2 solutions (Optimistic & ZK Rollups), and cross-chain protocols (atomic swaps, bridges, etc.).
• Proven track record in technical leadership, architectural decision-making, and mentoring development teams.
• Strong background in blockchain security and experience with smart contract audits.

Skills

• Proficiency in Solidity, Yul, Rust, TypeScript.
• Experience with smart contract development and deployment frameworks (Foundry, Hardhat).
• Understanding of DeFi protocols, AMMs, liquidity pools, and oracle integrations.
• Expertise in blockchain security principles and smart contract auditing methodologies.
• Experience in building high-performance distributed systems.

Mindset

• “Get Stuff Done” Mentality – ability to execute quickly while maintaining security and quality.
• Strong problem-solving skills and ability to navigate the constant innovations of the crypto market.
• Passion for research, innovation, and staying ahead of blockchain industry trends.
• Commitment to decentralization and open-source development.

Performance Measurement

• Speed and efficiency of feature deployments and updates.
• Code quality and successful security audit results.
• Impact on system architecture and scalability.
• Contribution to team growth and technical expertise.

Why you’ll love working with us

• Join a young, creative team in a fast-paced and supportive environment
• We’re open to new ideas — if you’ve got a vision, pitch it and make it happen
• Enjoy competitive pay that matches your skills and experience
• Be part of a company that’s shaping the future of DeFi
• Take time when you need it — we offer unlimited vacation days
• Get fully compensated for your work gear — we’ll set you up for success
• Travel with us! We host an annual team retreat at a top international location

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

Atlassian - Maker of team collaboration tools.

As DevOps Lead, you will drive our DevOps strategy, ensuring the reliability and scalability of Axelar’s infrastructure. You’ll lead a team of engineers, fostering a culture of automation, continuous improvement, and operational excellence. You’ll work closely with engineering teams to support development and production environments, optimizing deployment pipelines and improving system reliability.

Your responsibilities

• Lead and mentor a team of DevOps engineers, guiding best practices in infrastructure automation, security, and reliability.
• Own and enhance our CI/CD pipelines, ensuring smooth and automated deployments across multiple blockchain ecosystems.
• Improve monitoring, alerting, and observability across the stack using tools like Grafana, Prometheus, and other monitoring solutions.
• Optimize infrastructure for scalability, security, and cost-efficiency, leveraging Kubernetes, Docker, and cloud services like AWS.
• Drive automation initiatives, minimizing manual operations and improving deployment workflows.
• Collaborate with engineering teams to improve DevOps practices, troubleshooting issues and enhancing development workflows.
• Ensure high availability and reliability of our services, proactively identifying and addressing infrastructure bottlenecks.
• Stay ahead of emerging technologies in Web3 DevOps, continuously improving our stack to support blockchain interoperability.

Your profile

• Proven experience in DevOps with a strong background in infrastructure automation, CI/CD, and cloud services.
• Experience leading a DevOps function or team, mentoring engineers, and driving strategic improvements.
• Hands-on expertise in Kubernetes, Docker, and cloud platforms (AWS, GCP, or similar).
• Strong scripting, automation and IaC skills (Bash, Python, Javascript, Terraform, etc.).
• Experience with monitoring and alerting tools (Grafana, Prometheus, ELK, or similar).
• Understanding of blockchain networks, DeFi protocols, or decentralized infrastructure is a plus.
• Self-starter with a problem-solving mindset, thriving in a fast-paced, distributed team.

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 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.

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.

Reddit is hiring a remote Staff Frontend Engineer (Internal Applications). This is a full-time position that can be done remotely anywhere in the United States.

Reddit - The front page of the internet.

Automattic is hiring a remote Playground Wrangler. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

Automattic - We are passionate about making the web a better place.

Senior full stack developer

Salary and compensation

Postscript is hiring a remote Senior Software Engineer, Full Stack. This is a full-time position that can be done remotely anywhere in North America.

Postscript - SMS marketing software for growing Shopify stores.

Stitch Fix is hiring a remote Machine Learning Engineer - Foundational Models. This is a full-time position that can be done remotely anywhere in the United States.

Stitch Fix - Your online personal stylist.

About aPriori

aPriori is an MEV infrastructure and liquid staking protocol, designed for the parallel execution era and natively built on Monad. We are building the foundational infrastructure for the next era of decentralized finance, helping stakers, protocols and validators maximize yield with transparency and efficiency. Our team is composed of experts in high-performance trading, DeFi protocols, distributed systems, and blockchain infrastructure.

The Role

We’re looking for a strong Senior or Staff Backend Engineer passionate about solving complex problems with high-performance solutions. You will play a pivotal role in our journey from testnet to mainnet, with significant ownership in all stages from design, development, deployment, and maintenance. You’ll work closely with a highly experienced, crypto-native team to architect and implement performant backend systems.

What You’ll Do

• Design, build, and maintain scalable, mission-critical backend services and APIs powering liquid staking, mev infrastructure and other foundational DeFi systems
• Work on high-performance systems that interact with blockchain networks in real-time
• Collaborate with smart contract engineers, frontend engineers, and leadership to ship end-to-end features
• Contribute to technical decisions and engineering culture across the stack, including system architecture and design patterns

What We’re Looking For

• 4-10 years of backend software engineering experience in one of the following: Golang, Rust, C/C++, Python, Java, Node.js
• Experience in designing, developing, and maintaining scalable, high-performance backend systems and public-facing APIs
• Experience in managing and optimizing databases like PostgreSQL to ensure data integrity, enhance performance, and achieve scalability
• Excellent communication and collaboration skills
• Strong sense of ownership and a passion for driving complex technical decisions
• Ability to move fast and ship software to production with rapid iteration
• Academic background from a top-tier university and/or experience at a well-regarded technology company is a strong plus.

Nice to Haves:

• Experience in building backend systems interacting with blockchains
• Experience designing and developing liquid staking solutions, dexes and/or mev infra in production
• Knowledge of blockchain infrastructure, validator clients and p2p networking
• Deep knowledge of DeFi legos

Why Join Us

• Work at the frontier of crypto and DeFi infrastructure
• Join a tight-knit, low-ego team with deep technical chops
• Competitive compensation, bonus and token upside
• Fully remote, flexible work culture

We’re based on over 15 years of success, producing world-class video content and building, developing, and managing a number of high-traffic websites. Our award-winning content and websites are created exclusively by us and directly for the use of millions of users worldwide. At Kodify, we’re not just pushing boundaries in online entertainment—we’re rewriting the script! Our goal is to empower our people with everything they need to pioneer innovation in our industry. Our culture is our secret sauce, and we’re committed to preserving and enhancing it every step of the way.

Join our crew, where the Kodify team is not just an asset—it’s our crown jewel. We prioritize their growth and well-being above all else, ensuring they’re set up for success and always inspired to deliver their best work.

As a rapidly expanding company with erse hubs across the globe and over 20 vibrant national cultures, working with us means embracing thrilling challenges tailor-made for a star QA Automation Engineer!

At Kodify, we love tech and are always thinking about what’s next! R&D and optimizations are part of our spirit.

Your Role

We are looking for a talented QA Automation Engineer to join our remote team and contribute to the development and maintenance of automated testing frameworks. This role is open to remote candidates based in the European Union (a must for us). You will work closely with developers, DevOps engineers, and other QA team members to ensure the quality and reliability of our applications through automation.

As part of our team, you will help design, implement, and maintain robust test automation strategies while collaborating with cross-functional teams to enhance software quality. You will be responsible for ensuring that automation is seamlessly integrated into our CI/CD pipelines and that our applications meet the highest quality standards.

Your Responsibilities

• Develop, maintain, and enhance automated test suites for UI, API, and performance testing.
• Collaborate with developers and QA engineers to ensure comprehensive test coverage.
• Identify, document, and track defects while ensuring their timely resolution.
• Assist in defining and implementing QA best practices, including CI/CD integration.
• Support and improve automated testing efforts for regression, functional, non-functional, and security testing.
• Analyse test results, identify trends, and provide actionable insights to improve software quality.
• Ensure automation is scalable and efficient, identifying opportunities for optimisation.
• Contribute to performance, stress, and load testing to ensure our applications perform at scale.
• Work in an Agile/Scrum development process, participating in sprint planning, stand-ups, and retrospectives.
• Stay up to date with emerging technologies, tools, and industry best practices in test automation and security testing.

You

• You thrive in a collaborative environment and enjoy working with cross-functional teams.
• You are proactive, detail-oriented, and take ownership of your work.
• You love problem-solving and have a passion for delivering high-quality software.
• You are an excellent communicator who enjoys giving and receiving constructive feedback.
• You stay updated with industry trends, especially in test automation and cybersecurity, and continuously seek to improve your skills.
• You enjoy working in a fast-paced and evolving environment.

What We Offer

• Fully remote position or, if preferred, working in our awesome Barcelona office!
• Agile environment
• Top-notch tech stack!
• Upskill Fridays! Developers take time on Fridays to improve your skills, learn and research new trends that will allow us to level up our stack and processes
• Flexible working hours + core hours!
• 10% on top of your salary for learning and development - of your choice!
• Latest MacBook Pro!
• Company Amazon book account!
• Kodify off-sites, on-sites, events, and team activities!
• Amazing international team!
• 1 day off on your birthday
• Generous vacation and personal days
• 1 month paid sabbatical after 3 years
• Extended parental leave
• Health & Wellness budget

Job requirements

• 4+ years of experience in QA automation.
• Strong experience with JavaScript/TypeScript and related test automation frameworks such as Playwright, TestCafe, Cypress, Webdriver.io, Mocha, Chai, Jest.
• Solid understanding of API and web services testing (REST, GraphQL, Postman, or similar).
• Experience integrating test automation into CI/CD pipelines (GitHub Actions, Jenkins, GitLab CI, or similar).
• Familiarity with performance testing tools (Lighthouse, JMeter, K6) and best practices.
• Hands-on experience with security testing tools such as OWASP ZAP, Burp Suite, or similar.
• Good understanding of version control workflows (e.g Git).
• Strong analytical and debugging skills, with the ability to provide meaningful insights to developers.
• Experience with security testing methodologies, including vulnerability scanning, penetration testing, and security automation in CI/CD pipelines.
• Understanding of common security threats (e.g., XSS, SQL injection, CSRF, authentication vulnerabilities) and how to test for them.
• Excellent communication and collaboration skills.
• A strong passion for software quality, automation, and security.

Bonus Points

• Experience with TypeScript.
• Industry certifications related to security testing (e.g., CEH, OSCP, GIAC).
• Hands-on experience in penetration testing for web applications.
• Experience working in high-traffic environments.
• Knowledge of Microservices Architecture.
• Experience with cloud platforms (AWS, Kubernetes, Docker).
• Strong understanding of frontend performance testing.
• Previous experience working remotely and within distributed teams.

We are looking for a highly technical Developer Relations Engineer who is passionate about blockchain development and interoperability. This role is not just about engaging with the community—it’s about building, teaching, and supporting developers in integrating ZetaChain’s technology into their projects. You will be hands-on with Solidity, and other smart contract languages, creating technical content, supporting developer teams, and growing the ZetaChain ecosystem.

What You’ll Do

• Developer Engagement & Advocacy
  • Build relationships with developers and projects to help them successfully integrate ZetaChain.
  • Provide hands-on technical support to teams building universal applications on ZetaChain.
  • Manage and engage in developer communities (Discord, GitHub, X, Telegram) by answering questions, sharing insights, and gathering feedback.
  • Focus on outreach and content, with about 70% “relational” work (e.g., community engagement) and 30% coding.
• Technical Content & Education
  • Write deep-e blog posts, tutorials, and technical documentation to guide developers in building cross-chain applications.
  • Conduct live coding sessions, workshops, and webinars to onboard new developers.
• Hackathons, Bounties & Developer Acceleration
  • Organize online hackathons and developer bounties to foster innovation.
  • Support early-stage projects building on ZetaChain through mentorship and funding initiatives.
  • Design challenge tracks for developer events, ensuring they align with ZetaChain’s strategic goals.
• Ecosystem & Tooling Support
  • Collaborate with external service providers to improve the developer experience on ZetaChain.
  • Work closely with the engineering team to provide developer feedback and improve ZetaChain’s protocol and tools.

What You Bring

• Strong Technical Background
  • Proficiency in Solidity (required), with experience writing and deploying smart contracts.
  • Familiarity with TypeScript, Rust and Move (optional).
  • Experience working with blockchain node infrastructure, RPCs, and cross-chain messaging.
• Developer Relations & Community Building
  • Experience in DevRel, Developer Advocacy, or Technical Education.
  • Experience managing developer communities and providing technical support.
  • Strong communication skills and ability to explain complex technical topics clearly.
• Startup & Ecosystem Growth Mindset
  • Proactive, self-motivated, and comfortable working in a fast-moving environment.
  • Excited about interoperability, cross-chain development, and universal apps.
  • Passion for open-source projects and contributing to the blockchain ecosystem.
• Travel Requirements
  • This position requires frequent travel to attend conferences, hackathons, and developer events globally.
  • Must be eligible to travel to the US without a VISA.
  • Candidates based in San Francisco (SF) or New York City (NYC) will be prioritized, but we are open to exceptional candidates from other locations.

Compensation

Base Salary: $135,000 – $175,000 (San Francisco benchmark)

In addition to the base salary, all full-time team members receive an additional 10% to 25% in liquid benefits with upside based on role, experience, and impact. We believe in building together and sharing in the long-term success of the network. Compensation packages are designed to be competitive and aligned with the growth of both the team and the ecosystem.

As the Protocol Engineering Lead at ZetaChain, you will be responsible for driving the architecture, design, and development of our core blockchain protocol. You will lead a team of talented blockchain engineers, guiding the technical direction of the protocol and ensuring it meets the highest standards of performance, and security. This role requires deep expertise in blockchain systems, and strong leadership.

Responsibilities

• Lead the design, development, and optimization of the protocol, ensuring code quality, maintainability, and performance.
• Make key architectural decisions and guide long-term protocol strategy in alignment with the company’s goals.
• Manage and mentor a high-performing team of blockchain engineers, fostering a culture of excellence, ownership, and collaboration.
• Drive technical planning, execution, and delivery of the protocol SDLC including CI testing and mainnet upgrades.

Experience

• 6+ years of software development experience
• 3+ years of blockchain protocol experience, including Cosmos SDK or similar ecosystems
• Prior experience leading and mentoring engineering teams, with a strong sense of ownership
• Deep understanding of distributed systems, consensus algorithms, and performance optimization
• You are not expected to be an expert in all smart contract languages but strong Solidity knowledge is a must.
• Smart contract experience from chains like Solana, SUI, Bitcoin, or TON is a huge plus

Our tech stack

We’re a polyglot team and value engineers who can navigate across boundaries but you are not expected to be an expert in every area. Our core stack includes:

• Smart contracts: Solidity, Rust (Solana), Move (SUI), FunC (TON)
• Protocol: Go (Cosmos SDK, geth, btcsuite)
• CI/Infra: Docker, Kubernetes, GitHub Actions

Location

Hybrid position in San Francisco is preferred but open to excellent candidates remotely in US or EU regions only.

Compensation

Base Salary: $150,000 – $200,000 (San Francisco benchmark)

In addition to the base salary, all full-time team members receive an additional 10% to 25% in liquid benefits with upside based on role, experience, and impact. We believe in building together and sharing in the long-term success of the network. Compensation packages are designed to be competitive and aligned with the growth of both the team and the ecosystem.

Fold is looking to hire a Senior Front End Engineer to join their team. This is a full-time position that can be done remotely anywhere in the United States.

Datadog is hiring a remote Principal Sales Engineer (EMEA). This is a full-time position that can be done remotely anywhere in Germany.

Datadog - Modern monitoring & analytics.

"

Background

Sepal AI equips the world’s most ambitious AI teams with expert-grounded data at every stage of model development, enabling faster, safer, and more responsible AI deployment. Trusted by leading research labs and global enterprises, Sepal AI builds at the frontier of intelligence by bridging exceptional human expertise with cutting-edge AI.

We’ve built the largest global talent graph and tooling to deliver end-to-end enablement: data provisioning, training, evaluation, and safety testing. Relied on by top labs and enterprises, our platform drives innovation for researchers while upholding the highest standards of quality, clarity, and trust.

Sepal AI was founded in 2024 by engineers + operators from Vercel + Turing. In less than a year, we’ve closed several fortune 500s + top AI research labs as customers.

Responsibilities

As a software engineer, you’ll develop innovative full-stack applications and AI-enabled tooling that helps us scale our talent pool and data operations. You’ll be instrumental in enabling our customers - industry leaders and top AI research labs - to build, test, and evaluate their newest most powerful models with unparalleled precision, speed, and safety. You should be ready to build quickly - we build with no regrets and always try to go from PoC to production in days.

Who we’re looking for

* 3+ years of professional experience writing code and shipping products quickly end-to-end.

Bonus points if you have

* An advanced degree in Computer Science, ML, or engineering.

Why Sepal AI?

* Join a rapidly growing company at the forefront of the AI frontier, partnered with the world’s top research labs and enterprise AI teams.

Technology

* We use Typescript/Fastify, TRPC, NextJS, and PostgreSQL in a monorepo. We prefer you have experience with at least one of these technologies.

",

‍Overview‍

Daisychain is excited to announce the opening for a Software Engineer to join our team. This inidual will be a part of our small, innovative team that is giving progressive community organizers new ways to bring data about their supporters together, orchestrate outreach, and automate busy-work – while scaling the impact they have in the world.  

We’re seeking a software engineer who is excited about using their talents to deepen the impact of the causes we work with while having an opportunity to shape the technical direction of our product.

‍Daisychain is building a modern platform for effective organizing. Our customers include progressive political campaigns, grassroots organizations, and ambitious non-profits. Collectively, they're using Daisychain to win critical campaigns, build powerful movements, and create a more just and equitable world. 

‍Job Title: Software Engineer

‍Reports to: CTO

Schedule: Full-Time

‍Location: We're building a remote product and engineering team with a center of gravity in the New York City metro area. Work from anywhere with high speed internet as long as your work day overlaps with the U.S. East Coast business hours, so we can talk on Zoom and Slack. For candidates outside of the NYC metro area, this role requires travel to a team gathering 1-2 times per year.

‍Responsibilities

• ‍ Work collaboratively to deliver new features of the Daisychain product to customers.
• Take part in planning new features, understanding high-level customer requirements, and shaping the vision for the Daisychain product.
• Participate in peer code review, technical planning and architectural decision making.

‍Experience Requirements

• At least 3 years of experience writing ambitious full-stack software for the web.
• Experience with a modern javascript framework like React or Vue.js
• Experience with a model-view-controller web framework like Express.js, Django or Rails.
• Experience with or openness to working remotely as part of a collaborative team.
• Familiarity and experience with the ways that organizations and campaigns use the internet to create social change and organize people.
• A passion for positive and progressive social change.
• Fluent in written and spoken English

‍Preferred Qualifications

• Experience with AI/ML techniques.
• Experience with voter files and other technologies that make up the political technology ecosystem.
• Experience with column oriented databases or large scale data integration.

Technical Background

Our tech stack includes Ruby, Vue.js, Typescript, Clickhouse and Postgres, deployed on AWS. We are passionate about software engineering as a craft.  Daisychain is built on a solid foundation of best practices like continuous delivery, acceptance tests, monitoring and code review.

Compensation and Benefits

‍We’re considering both full-time salaried roles for candidates within the United States and contractor roles for candidates based outside of the United States.

• The salary range for this position for full-time US Candidates is $120k - $160k depending on experience. The contractor compensation range for this position is dependent on location and experience.
• Profit Sharing: Full-time employees are eligable to participate in Daisychain's profit-sharing program, aligning with our commitment to sharing the financial rewards of our collective efforts.
•  Benefits: Daisychain offers a comprehensive benefits package to full-time employees, including medical, dental, vision, matching 401(k), and paid time off.

‍Daisychain is an Equal Opportunity Employer

We believe that ersity of ideas and perspectives makes our products and the movements that we serve stronger. We are proud to be an inclusive and equal-opportunity workplace, where all applicants and employees are considered for hire, promotion and job status without regard to race, ethnicity, color, religious affiliation, national origin, age, gender identity or expression, sexual orientation, or physical handicap.

Salary and compensation

Benefits

💰 401(k)

🌎 Distributed team

🤓 Vision insurance

🦷 Dental insurance

🚑 Medical insurance

🏖 Paid time off

💰 401k matching

🏔 Company retreats

🏬 Coworking budget

💰 Profit sharing

🎅 We hire old (and young)

H1 is hiring a remote Big Data Engineer. This is a full-time position that can be done remotely anywhere in the United States.

H1 - Creating a healthier future.

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

Help Scout - Simple customer service software and education.

"

We're hiring a founding engineer to own and build the infrastructure powering the future of healthcare operations. This role takes intense commitment, but you’ll work directly with the founders to shape the product, the company, and the future of healthcare ops.

Our product sits at the core of our customers' operations. From day one, the code you ship will support thousands of doctors and impact the experience of over 100 million patients. What you build matters.

What you’ll do

* Ship fast, talk to customers, and build at the frontier of AI.

What kind of person we’re looking for

* You’re high-energy, opinionated, hungry, and fun to work with.

Tech stack

* LLMs: OpenAI, Anthropic

",

We are seeking a skilled Smart Contract Engineer to develop secure and reliable smart contracts specifically for our robotics identity layer. This role is integral to bridging blockchain technology with robotics, enabling secure, verifiable, and scalable identity management solutions. Success in this role means deploying robust smart contracts, ensuring blockchain best practices are followed, and contributing to the advancement of decentralized robotics infrastructure. You will collaborate closely with robotics engineers, blockchain architects, and product managers to integrate innovative blockchain solutions into robotics platforms.

What Success Looks Like:

• Deploying reliable, secure, and efficient smart contracts.
• Seamless integration of smart contracts with robotics identity systems.
• Proactive identification and mitigation of potential security risks and vulnerabilities.
• Effective collaboration across engineering teams, contributing actively to system architecture decisions.
• Consistent adherence to coding standards, testing protocols, and best practices in blockchain technology.
• Responsibilities:
• Design, develop, test, and deploy Ethereum-compatible smart contracts using Solidity.
• Integrate smart contract solutions within robotics identity layers, ensuring compatibility and performance.
• Conduct comprehensive audits and tests of smart contracts to identify and mitigate security vulnerabilities.
• Maintain comprehensive technical documentation and ensure code transparency.
• Collaborate with cross-functional teams to define system requirements and blockchain integration strategies.
• Stay updated with emerging blockchain technologies, providing strategic recommendations on technology adoption.

Qualifications:

• Proven experience developing and deploying Solidity smart contracts in production environments.
• Strong understanding of blockchain fundamentals, Ethereum architecture, and decentralized applications (dApps).
• Familiarity with tools such as Hardhat, Foundry, or similar smart contract development frameworks.
• Experience performing smart contract audits and code reviews.
• Solid understanding of cryptographic protocols and secure coding practices.
• Excellent problem-solving skills and ability to work independently and collaboratively in a fast-paced environment.
• Strong verbal and written communication skills.
• Bachelor’s degree in Computer Science, Engineering, or a related technical field preferred, or equivalent professional experience.

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

ActiveCampaign is hiring a remote Senior iOS Engineer. This is a full-time position that can be done remotely anywhere in Poland.

ActiveCampaign - Grow your business with customer experience automation.

Dropbox is hiring a remote Full Stack Software Engineer, Dropbox Sign. This is a full-time position that can be done remotely anywhere in Poland.

Dropbox - Keep life organised and work moving – all in one place.

OpenSea is looking to hire a Staff Frontend Engineer to join their team. This is a full-time position that can be done remotely anywhere in the United States.

Job overview:

We’re looking for a Front-End Developer to join our team as we bring Cork to market and build out the product and developer ecosystem. This role is ideal for a developer who is not only skilled in front-end engineering and Web3 development but also has experience in designing onboarding funnels, managing product analytics, and building compelling data displays to optimize user activation, conversion and retention.

Key Responsibilities:

• Front-End Development: Build, maintain, and optimize our React/Next.js-based Web3 front-end.
• Web3 Integration: Implement smooth user interactions with smart contracts using ethers.js, viem, wagmi, and other Web3 libraries.
• User Experience Optimization: Identify and reduce friction in user flows based on behavioral data, funnel drop-off points, and user feedback.
• Performance Optimization: Enhance UI/UX speed, responsiveness, and accessibility.
• Ad-hoc Product Support: Provide insights on feature prioritization, UX design improvements, and A/B testing strategies.

Requirements

• 5+ years of experience in front-end development; 2+ years in blockchain preferred
• Proficiency in complex ABI-encoded data structures, including nested structs and dynamic types, handling decimals and rounding.
• Experience working with the Permit2 and ability to efficiently batch multiple on-chain calls using Multicall or similar meta-transactions
• Ability to filter smart contract event logs, identify storage slots for simulating smart contract calls and async loading using react.lazy, suspense and dynamic imports.
• Strong background with timeseries data with proficiency in rendering charts of different granularity using libraries like ECharts, AntV.vision, or ApexCharts
• Experience working with RESTful APIs and GraphQL Data Management techniques such as Schema Stitching, Subscriptions and Client-side Caching.
• Proven experience designing onboarding funnels and improving user activation and usage based on user behavior
• Understanding of UI/UX principles and ability to implement high-quality, conversion-optimized interfaces.
• Ability to work independently in a fast-moving, startup-like environment.

Customer.io is hiring a remote Technical Support Engineer. This is a full-time position that can be done remotely anywhere in Americas.

Customer.io - Power automated communication that people like to receive.

GitLab is hiring a remote Intermediate Backend Engineer (Golang), Platform Insights. This is a full-time position that can be done remotely anywhere in Canada, Europe or the United Kingdom.

GitLab - A single application for the entire DevOps lifecycle.

Chess.com is hiring a remote Senior Backend (Java & PHP) Engineer. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

Chess.com - The world's largest chess community.

Stripe is hiring a remote Full Stack Engineer, Growth & SEO. This is a full-time position that can be done remotely anywhere in Spain.

Stripe - Online payment processing for internet businesses.

Role: Senior Fullstack Software Engineer

Remote: anywhere in the world

Blotato helps content creators go viral: https://www.blotato.com

Preferences: vim, emacs, fullstack, no hypechase js, ai

Tech stack: nextjs, fastify, typescript, supabase, heroku, aws

This is a fulltime, permanent position, no contractors/consultants.

Interested? apply with your resume and explain your favorite AI coding tool.

Salary and compensation

Benefits

🌎 Distributed team

🏖 Unlimited vacation

📚 Learning budget

🖥 Home office budget

⬜️ No whiteboard interview

👀 No monitoring system

🚫 No politics at work

🎅 We hire old (and young)

About Us

Chorus One is one of the leading operators of infrastructure for Proof-of-Stake networks and decentralized protocols. Tens of thousands of retail customers and institutions are staking billions in assets through our infrastructure helping to secure protocols and earn rewards. Our mission is to increase freedom and speed of innovation through decentralized technologies.

We are a erse team of around 75 people distributed all over the globe. We value radical transparency, striving for excellence and improvement while treating each other with kindness and generosity. If this sounds like you, we’d love to hear from you.

Role

As a Data Engineer, you will be responsible for the design, implementation, and maintenance of data pipelines that power user-facing products as well as internal tools. You will integrate with internal blockchain RPC nodes and third-party APIs to fetch stake and rewards data for multiple blockchains, and store and process this data to power internal reports and dashboards, as well as external customer reporting. You will play a critical role in enabling data-driven decision-making.

Our current data pipelines are implemented in Python, and run on a mix of Apache Airflow and Kubernetes, storing data in Postgres and Google Cloud Storage. We use various dashboarding and analysis tools, including Streamlit.

Responsibilities

• Implement data pipelines that ingest rewards, pricing and commercial contract data. Ensure data quality via automated sanity checks.
• Maintain automated workflows that make assets-under-management numbers and APY data available to our website and third parties.
• Develop and maintain internal dashboards for the presentation and analysis of company revenue data, assets under management, and a detailed breakdown of these numbers.
• Work with cutting-edge blockchain technology, so all of the above data is available at the moment when a new blockchain network launches.
• Collaborate with our Networks, Engineering, Finance, and Customer Success teams to understand data needs and deliver on business requirements.

Job requirements

What we are looking for:

• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field
• Prior experience with Python and REST APIs
• Experience with SQL, preferably PostgreSQL
• Strong communication skills to collaborate effectively with both technical and non-technical stakeholders
• Familiarity with dashboarding tools such as Streamlit, Metabase, or Observable, and pipeline orchestrators such as Apache Airflow or Dagster
• Affinity or interest in blockchains and proof of stake. Prior experience is not a requirement, but definitely an advantage.
• You are able to work in the following time zone: Switzerland ± 6 hours

Our Offer

• Autonomy and ownership in a friendly and supportive work environment and the opportunity for rapid growth.
• Competitive fixed compensation (65k–110k USD commensurate with experience) + equity.
• Part-time optional, 80% – 100%.
• All-expense paid biannual team retreats at various destinations. Past retreats took place in Egypt, Serbia, Kenya, USA, South Korea, Dubai, Thailand, Spain, and Japan.
• Remote, but not alone. We are a strong global collaborative environment.
• Remote working budget (laptop, co-working space, etc.)
• Personal development budget
• Gather experience and build your network in the vibrant crypto ecosystem.
• Learn about state-of-the-art protocols that lay the foundation for an open, transparent, and programmable financial system.

Xapo Bank is looking to hire a Front-End Web Developer to join their team. This is a full-time position that is 100% remote with no geographical restrictions. Work remotely from anywhere.

We are seeking a backend engineer to contribute to our trading platform. You will develop, test, and maintain our API, working closely with smart contract and frontend engineers.

What we are looking for:

• A developer with deep experience building backend services on top of smart contracts
• Familiarity with DeFi
• A security-oriented mindset
• Experience writing clear documentation for end users is a plus