¿Te apasionan las criptomonedas y el blockchain, y tienes lo necesario para destacar como Developer?

• YoutHNesT es la primera criptomoneda social que combina el poder de las memecoins con un propósito transformador: ayudar a los jóvenes a conseguir su primera vivienda. Con un concepto innovador y un enorme potencial de crecimiento, este proyecto promete no solo cambiar vidas, sino también convertirse en un referente en el mundo cripto. ¿Estás list@ para unirte a esta revolución financiera y social?
• Buscamos talento apasionado para cubrir el puesto de Developer en YoutHNesT
• Si te interesa ser parte de un proyecto innovador con impacto social, envíanos tu candidatura. ¡Juntos, estamos cambiando el futuro del acceso a la vivienda para los jóvenes!

Tareas

Tareas del Developer YoutHNesT:

• Desarrollo y Mantenimiento de la Web
• Integración Web3 & Plataforma
• Desarrollo Blockchain y Smart Contracts
• Backend y Base de Datos
• Seguridad y Optimización
• Soporte y Actualizaciones

Requisitos

Buscamos un perfil con visión y ambición para liderar, desde su ámbito, el crecimiento de YoutHNesT, la primera criptomoneda de su clase con un fuerte enfoque social. Este es un proyecto disruptivo en plena fase de expansión, donde el compromiso y la confianza serán clave. Ofrecemos una oportunidad única: trabajar a éxito a corto/medio plazo, con la garantía de que el riesgo será recompensado con una compensación altamente atractiva y proporcional al éxito alcanzado. ¿Te animas a asumir este reto y a cosechar los frutos de un proyecto con gran potencial?

Requisitos y habilidades necsarias:

• Experiencia en desarrollo blockchain: 2+ años trabajando con Solidity y contratos inteligentes (ERC-20, vesting, oráculos).
• Experiencia en Web3: Dominio de Web3.js, Ethers.js y conexión de DApps con la blockchain.
• Desarrollo Full-Stack: Experiencia con React, Next.js o Vue.js en el frontend, y Node.js, Python o PHP en el backend.
• Seguridad Blockchain & Web: Conocimiento de auditoría de smart contracts (Reentrancy, Overflows, Flash Loans) y ciberseguridad web (DDoS, CSRF, XSS).
• Experiencia en APIs y servicios Web3: Integración con MetaMask, WalletConnect, y uso de APIs como Etherscan, Chainlink, The Graph.
• Experiencia con Git & metodologías ágiles: Trabajo con GitHub/GitLab y conocimiento de Scrum/Kanban.
• Idiomas necesarios: Nivel fluido de inglés y español

Beneficios

Beneficios de trabajar en YoutHNesT

• Oportunidad de crecimiento en una startup innovadora con un enfoque disruptivo en el sector blockchain y criptomonedas.

• Participación en un proyecto con impacto social, ayudando a los jóvenes a acceder a su primera vivienda.

• Trabajo remoto con flexibilidad horaria, lo que permite equilibrar vida personal y profesional.

• Alta Remuneración, con posibilidad de participar en el éxito del proyecto a través de equity o tokens.

• Ambiente dinámico y colaborativo, con un equipo comprometido en una misión de largo alcance.

• Desarrollo profesional continuo, con oportunidades de formación y networking en el ecosistema cripto.

• Si estás list@ para formar parte de un equipo que revolucionará el mundo de las criptomonedas y generar un cambio social real, ayudando a las nuevas generaciones a cumplir el sueño de su primera vivienda, ¡queremos conocerte! En YoutHNesT, valoramos el talento, la innovación y la pasión por dejar huella. Si compartes nuestra visión y cumples con los requisitos, envíanos tu CV y súmate a esta emocionante aventura. ¡Tu impacto comienza aquí!

Apply Now:

About

Accountable is a digital finance platform that empowers businesses to verify and share data in a privacy preserving way, and retail investors to access verifiable yield opportunities. We aim to remove trust barriers, reduce fraud, and unlock new opportunities for efficient and safe financial growth.

We are looking for a motivated full stack engineer capable of turning ideas into code using new technologies and focusing on speed of delivery. A strong understanding of frontend and backend technologies and being self-driven are a must. Previous Web3 experience (as a developer or as a power user) is required. Understanding of blockchain fundamentals, L1/L2s, basic cryptography etc. is a plus.

Responsibilities

• Develop, test and review code
• Rapidly build and iterate on new features and MVPs using advanced technologies
• Participate in building specifications, design new features, independently assess feasibility, cost, and complexity of things to be implemented
• Handle test and production deployments
• Integrate with other protocols and sources of data

Requirements:

• Strong understanding of both frontend and backend technologies
• Proven experience building high quality web-based products
• Resourceful and self-motivated
• AI assisted coding is a big plus, but not a must as long as the focus is on speed, experimentation and feedback driven development
• Excellent general problem-solving skills and intellectual curiosity
• Up to date with latest developments in the space, a strong interest in staying on top of emerging technologies and industry trends
• Passionate about building and improving products, building MVPs and experimenting with new stuff
• Demonstrated ability to learn and adapt to new technologies quickly
• Professional integrity and dependability
• Experience with dApp development libraries and frameworks is a big plus
• Previous experience with lending protocols is a big plus
• Understanding of blockchain fundamentals, L1/L2s, bridging, basic cryptography etc. is desirable
• Experience working within a fast-paced, startup environment is a plus
• Hackathon participation and pet projects are a plus
• Exposure to growth hacking principles and A/B testing methodologies
• Excellent written and verbal communication skills in English
• Leadership skills are a big plus
• Languages used: Javascript, Python, Java, Solidity
• Frameworks: React

Setup:

• Fully remote (currently) with preference for European timezone B2B collaboration

This role is for one of the Weekday's clients

Location: Remote (India)

JobType: full-time

What You’ll Do

• Take ownership of the quality, reliability, and availability of code being shipped.
• Oversee day-to-day operations and maintain comprehensive documentation of production features.
• Develop product features from scratch, adhering to technical standards set by the Technology Lead.
• Write clean, maintainable, and scalable code that complies with development policies.
• Participate in on-call incident response on a rotational basis, including after-hours and weekends.
• Collaborate with the Technology Head to define product architecture and document technical decisions.
• Contribute to product meetings, providing insights on architecture, design, and feature development.
• Bridge the gap between documentation and development by providing weekly feedback to the Research & Analysis team.
• Mentor and manage junior developers and interns.

What Makes You a Good Fit

• Strong expertise in blockchain technologies, including decentralized computing, DLTs, and decentralized applications.
• Proficient in JavaScript, TypeScript, and frameworks such as React, Angular, and Node.js.
• Experience with client-server architecture and development using client-side JavaScript frameworks (React Native, React.js).
• In-depth knowledge of Bitcoin, Ethereum (EVM), and other blockchain networks.
• Hands-on experience working with RESTful APIs.
• Solid understanding of data structures, algorithms, and design patterns.
• Experience coding in Solidity for smart contract development.
• Familiarity with blockchain development frameworks such as Truffle & Hardhat.
• Proficiency in NoSQL databases (MongoDB) and experience with GraphQL queries is a plus.
• Strong debugging and issue-resolution skills for frontend and backend solutions.
• Understanding of containerization tools like Docker and Kubernetes, and CI/CD pipelines.
• Experience working with cloud platforms like AWS, GCP, and keeping up with the latest trends in blockchain development.
• Knowledge of monolithic and microservices architectures.
• Proficient with Git for version control.
• Familiarity with testing frameworks such as Jest, Mocha, Chai, Karma, or Enzyme is a plus.
• Experience in writing reusable libraries.
• Contributions to open-source blockchain projects will be an added advantage.

Apply Now:

Apply Now:

About CoW DAO

CoW DAO is on a mission to protect Ethereum users from the dangers of DeFi. It does this by supporting the development of CoW Protocol, CoW Swap, MEV Blocker, and CoW AMM, and by funding values-aligned projects through the CoW Grants Program.

CoW Protocol is the second-largest DEX aggregator by monthly volume and the first-largest intents-based exchange. MEV Blocker is currently involved in ~4% of all Ethereum transactions, making it the category leader. CoW AMM is the only live AMM that protects LPs from LVR (loss-versus rebalancing).

As a member of CoW DAO’s core team, you will have the opportunity to shape these essential products, and contribute to the Ethereum ecosystem more broadly.

About the role

Location: We are a fully remote team, and although we hire almost globally, there is a preference for this role to be based in Europe or remote +/- 4 hours CEST time

Please note we’re not hiring from the US, Australia, or New Zealand

Position: Full-time contractor

We’re looking for a passionate Senior Frontend Engineer to help take decentralized trading to the next level. You’ll take charge of our CoW DAO products and help shape what’s coming next, making sure the user experience is smooth across trading interfaces, analytics, docs, and more.

We’re after someone who’s a great communicator, loves working with a team, and is eager to learn (especially about blockchain). If you thrive on ownership, like solving problems, and are curious about the world of blockchain, this might just be the role for you.

Tech stack we work with

• Frontend: Typescript, React, styled-components
• Web3: Web3, ethersjs, Hardhat, Solidity, IPFS, TheGraph, ENS
• Testing: Jest, Cypress, React Testing Library
• Analytics: Dune Analytics, Google Analytics

What you’ll be doing

• Develop and improve user-facing applications like CoW Swap on top of the CoW Protocol
• Build and implement new features quickly, with a focus on performance, accessibility, and quality
• Decide when to create reusable abstractions and when to build one-off features, always keeping scalability and maintainability in mind
• Contribute to the product roadmap by proposing new features, sharing design ideas, and helping the team prioritize tasks
• Push the boundaries of decentralized user interfaces. Our products are hosted traditionally but also deployed on decentralized networks like IPFS/ENS, and we work with decentralized infrastructure like The Graph and Ethereum nodes

What we’re looking for

• Experience: 3+ years of professional experience building client-side web apps
• Technical skills: Expertise in front-end technologies (React, TypeScript, CSS, state management libraries like Redux, Recoil, or Jotai)
• Code quality: Ability to review and guide the team on architecture, code quality, and best practices
• Problem-solving: Strong debugging and problem-solving abilities
• Team player: Excellent communication skills and a willingness to collaborate and share knowledge
• Self-driven: You take ownership of your work and are proactive about learning and growing in your career
• Blockchain knowledge: Experience integrating frontend with smart contracts and familiarity with tools like Web3.js, Ethers.js
• Product vision: A solid understanding of the crypto DApp ecosystem, user experience, and market trends

Bonus points if you have:

• DevOps & tooling: Experience with CI/CD pipelines, testing frameworks, and deployment tools; familiarity with cloud services (AWS, GCP, etc.)
• Backend experience: Knowledge of Node.js, databases, and RESTful or GraphQL APIs

What we can offer

• Flexible work environment: Join our hub in Lisbon or work remotely
• Token plan: Have a stake in our mission and shape the future of CoW DAO
• Periodic gatherings: Enjoy opportunities to connect with the rest of the team through regular trips
• Conference allocation: Stay up-to-date with ecosystem advancements using our conference budget
• Learning budget: Use our learning budget to support your higher ambitions
• Hardware budget: Take advantage of a hardware budget for acquiring necessary equipment
• Make an impact: You are joining a startup where you can make a huge difference. Your work matters!
• Flat hierarchies mean fewer processes and bureaucracy - see more of your ideas come to life!
• Flexible work and vacation times: Prioritize work-life balance through our robust flexible work policy and vacation allowance
• Growth: If you’re someone who loves taking the initiative and getting things done, CoW offers lots of opportunities for your individual growth

Referral Program

Earn 3.000 USDC or USD with the 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 diverse 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.

In the past few years, the foundational technology required for crypto to replace traditional payment rails has finally come online: stablecoins, cost-effective L2 networks, and Coinbase Smart Wallet. This represents a multi-billion dollar opportunity for Coinbase to disrupt the payments industry by leveraging its leading position in onchain development and deep expertise of existing fiat rails.

This role is for the lead engineer of the team for this new Onchain Payments effort, which will include both 0-1 product development and building off of the existing Coinbase Commerce product. It’s best to think of the team as a start-up within Coinbase looking to find product market fit for a radically new approach to payments

What you'll be doing:

• Bring a 0-to-1 product to life to replace the global payment stack with crypto rails
• Lead the fullstack design and development of a secure, high-performance product using TypeScript, Go, and Solidity
• Rapidly prototype user flows to gain market feedback and adjust accordingly, productionizing code as necessary
• Integrate with a variety of existing Coinbase surfaces, including Smart Wallet, Commerce, and Platform APIs
• Design, implement, and drive adoption of a novel open-source web3 payment protocol using Solidity
• Work closely with product managers, designers, and other cross-functional partners to find product market fit
• Leverage, maintain, and improve upon an existing legacy codebase of Coinbase Commerce
• Drive the adoption of engineering best practices, ensuring operational excellence and sound maintenance of legacy code
• Optimize frontend and backend performance, ensuring fast transaction processing, smooth UI interactions, and efficient resource utilization
• Troubleshoot and debug complex fullstack issues, ensuring platform stability, reliability, and security
• Provide technical guidance and support to the entire engineering team and contribute to the overall technical direction of Coinbase

What we look for in you:

• 8+ years of experience in software development with a strong focus on fullstack development; 2+ years of experience in a leadership position of a crypto start-up is a plus
• Mastery of Go, JavaScript, TypeScript, and Solidity; familiarity with Ruby is a plus
• Proven track record of rapidly shipping high-quality fullstack systems
• Deep understanding of Ethereum and EVM-compatible chains and experience with developing smart contracts
• Demonstrated commitment to excellent developer experiences and open source code, especially in relation to crypto and payments
• Strong expertise in frontend development using modern frameworks like React, Next.js, and Angular
• Solid understanding of distributed systems, microservices architecture, and event-driven architectures, including experience with databases (PostgreSQL, MySQL, MongoDB), caching systems (Redis, Memcached), and message queues (Kafka, RabbitMQ)
• Experience with developer operations, including Cloud providers such as AWS and containerization technologies such as Kubernetes
• Deep understanding of web security best practices and experience with implementing secure coding practices for financial systems
• Exceptional problem-solving skills and ability to find elegant solutions to complex challenges in the crypto payment processing domain
• Outstanding communication, leadership, and collaboration skills, with the ability to inspire and mentor teams
• Bachelor's or Master's degree in Computer Science, Software Engineering, or equivalent experience
• Crypto-forward experience, including familiarity with onchain activity such as interacting with Ethereum addresses, using ENS, and engaging with dApps or blockchain-based services.

Job #: GDFS06US

*Answers to crypto-related questions may be used to evaluate your onchain experience

#LI-Remote

Apply Now:

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.

Across’ purpose: To fulfill crypto’s potential by making blockchains more usable, more accessible and more efficient.

Across’ Vision: Intents are the standard in cross-chain interoperability.

Who is Risk Labs?

Risk Labs is the foundation and core team behind UMA, and some top tier products built with it such as oSnap, Oval, and the Across protocol. The Risk Labs team, operates as one cohesive (amazing!) culture, but focuses on two core protocols, UMA and Across. UMA and Across are decentralized protocols governed by community members across the globe in DAOs, and are supported by Risk Labs Foundation. UMA’s optimistic oracle (OO) can record any verifiable truth or data onto a blockchain. Across is leading the future of interoperability with its frontier intents based architecture.

The Role

We’re looking for a Senior Backend Engineer to join the Across protocol team. You’d be working alongside top tier engineering talent, world class data driven product development, and a team motivated to be hugely impactful for the exciting interoperable future that we’re racing towards. You’re a person who loves optimizing and building at the intersection of technology, finance, and data.

Responsibilities

• Building backend services: Build highly available backend systems, both serverless and persistent. These systems should have a high degree of correctness, efficiency, and anti-fragility.
• Indexing complex onchain data: Design systems that index complex onchain data for ease of use and speedy access. Gas efficient protocols rely on indexing to keep user experiences snappy and pleasant.
• Data engineering: Design and develop large-scale data pipelines to drive our understanding of our users and our protocol’s real-world performance.
• Building bots and smart contracts: Build bots and other services whose primary role is to monitor smart contracts and send transactions. You will be responsible for building infrastructure that is responsible for company and user funds.
• Code review and mentorship: Write code in a highly collaborative open source ecosystem. As much of your day will be spent reviewing and designing code as it will be writing new code. We take pride in writing clean code.

Requirements

• 4+ years full-time experience in Software Engineering at a software, financial services or related technology organization
• 2+years of experience with blockchain-based projects (hackathons or personal projects as well)
• Experience with databases, networking, and data pipelines is strongly preferred
• Outstanding critical thinking skills; low ego, high curiosity and comfort in being wrong
• Deep interest in software; desire to understand the why and the how of everything you work on
• Demonstrated ability to learn new tech and write secure and clean code
• Passion for blockchain technology, cryptonomic protocol design, game theory, and decentralized finance
• Growth mindset; a desire to learn from and mentor those around you
• Strong communication and collaboration skills, especially written

Language experience is not as important as your demonstrated ability to learn quickly but our language stack is simply: Typescript, Solidity, GCP

Compensation and Benefits

• Pay packages include competitive salaries & meaningful token options.
• Salaries for this role range from $100-200k (USD), and your token allocation can grow with your voting rewards while you participate in the growing ecosystem.
• Will pay in stablecoins or fiat
• Philosophies for a culture that show we care: Take vacation when you need it, family care, training and development (just to name a few)
• 100% remote, which means we encourage you to create the work environment that you thrive in.
• We are a globally distributed team and require all employees to have at least 3-4 hours of daily overlap with Eastern Standard Time (EST) to ensure seamless collaboration and communication. This allows us to work effectively across time zones while maintaining a strong team connection.
• At least two team wide offsites a year

Studies have shown that women and people of colour are less likely to apply to jobs unless they meet every single qualification. Risk Labs, the employing entity, is an equal opportunity employer and is dedicated to diverse, inclusive, and authentic workplaces. So, if you’re excited about this role but your past experience doesn’t perfectly align- we encourage you to apply anyways. We value you taking the chance. Risk labs will not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Our values:

1. We value each individual’s right to economic freedom.
2. We value openness, honesty, and directness.
3. We value integrity.
4. We value iterative learning.
5. We value taking smart risks.
6. We value creating an environment where everyone “does their best work”.

Why do we love working at Risk Labs?

We are a group that’s aligned with the ethos of the crypto industry and doing our best to make an impact for the industry and world at large. You’ll succeed with Risk Labs if you’re a self-starter, kind, adaptable, and passionate about making an impact. Risk Labs is a values driven team that strives to create an environment where we can do our best work, and succeed. We’re building products that we believe in, and continuing to strive for innovation and growth. Both personally and professionally we support each other to create a happy, healthy, and inspired team vibe, so we can remain motivated to build things the world needs and loves. We take pride in the fact that we are at once family-friendly as well as nomad-friendly.

UMA’s optimistic oracle is a decentralized truth machine for Web3- yes, that’s a bold and very exciting statement. We’ve built a solid foundation, in terms of the team, the technology, and the products, and the road map ahead is one full of exciting technical challenges, growth, and telling our story to the world. Across is creating an interoperable world where DeFi is seamless with its intents based architecture. We’ve grown from an early bridge, to a market leader, and won’t stop innovating and building. We have big dreams, and a team excited to bring them to life.

Still want to know more?

• Our team blends a mix of highly-sought engineers, and a diverse business team to showcase their high quality tech. Our international and fast-growing team includes a diverse background of experiences and has drawn world class talent. We have a great network of supportive investors from groups like: Placeholder, Blockchain Capital, Bain Capital, Coinbase, Dragonfly… to name a few.
• Teammates take the time off that they need and support each other to be their best selves- we care about your wellness.
• You will not get bored with Risk Labs. We are constantly developing, building, experimenting and evolving. Yes we try to allow people to focus on their specific product areas, but things are always shifting and evolving. There’s no right answer and we’re all just doing our best!

Gauntlet is a leader in Our mission is to drive adoption We seek a research manager to lead client-facing research under the Applied Research organization. This role is pivotal in providing deep quantitative expertise to top DeFi protocols and ecosystems including Uniswap, Near and Movement on how they can grow, optimize, and de-risk mechanisms within their various system. This person will lead a team of researchers to analyze on-chain and off-chain data, develop models, and provide actionable insights into the rapidly evolving crypto and Web3 ecosystem. This role requires deep expertise in blockchain analytics, quantitative research, statistical modeling, and strong.

Responsibilities

• Own multiple clients by developing research roadmaps and managing the team responsible for executing these roadmaps at a high-quality bar.
• Support, grow, and develop a team of high-performing researchers capable of tackling DeFi’s most complex problems.
• Perform in-depth mechanism design and research to develop the next generation of DeFi mechanisms and patterns.
• Develop predictive models, statistical analyses, and machine learning algorithms to extract insights into blockchain and market data.
• Work with large-scale structured and unstructured datasets, ensuring data integrity and efficient processing.
• Publish research reports and insights on blockchain data trends, protocol performance, and economic models.
• Attend international conferences to present Gauntlet’s research to the larger DeFi and Web3 community.

Qualifications

• 7+ years of experience in research, data science, or mechanism design with at least 2+ years of experience managing high-performance teams.
• Strong communication skills, both verbal and written, along with the ability to operate in a client-facing role.
• Deep understanding of DeFi and crypto topics either through professional work or personal interest and experience.
• Proven mentorship capacity & experience.

Bonus Points

• DeFi, crypto, or blockchain development experience (e.g. Web3, Hardhat/Truffle, Solidity, etc..)

Benefits and Perks

• Remote first - work from anywhere!
• Competitive packages with the added opportunity for incentive based compensation
• Regular in-person company retreats and cross-country “office visit” perk
• 100% paid medical, dental and vision premiums for employees
• Laptop, monitor, keyboard and mouse setup provided
• $1,500 WFH stipend upon joining
• $100 per month reimbursement for fitness-related expenses
• Monthly reimbursement for home internet, phone, and cellular data
• Unlimited vacation policy
• 100% paid parental leave of 12 weeks
• Fertility benefits

Please note at this time our hiring is reserved for potential employees who are able to work within the contiguous United States and Canada. Should you need alternative accommodations, please note that in your application.

The national pay range for this role is $180,000 - $220,000 plus additional On Target Earnings potential by level and equity in the company. Our salary ranges are based on paying competitively for a company of our size and industry, and are one part of many compensation, benefits and other reward opportunities we provide. Individual pay rate decisions are based on a number of factors, including qualifications for the role, experience level, skill set, and balancing internal equity relative to peers at the company.

About us

We are building BOB, a hybrid L2 that combines the best of Bitcoin and Ethereum. We seek a Software Engineer (Rust) to support the design, implementation, and launch of a novel BitVM bridge with Bitcoin security.

The role

You enjoy proactively identifying and solving engineering challenges by applying your expertise in Bitcoin and cryptographic protocols. You will implement and optimize the BitVM bridge, ensuring efficient and secure execution of its core components. Working closely with the team, you’ll contribute to research-driven development, implement complex Rust solutions, and be a trusted point of contact for improving BOB.

What you will do

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

Requirements

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

Nice to have

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

Benefits

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

About Us

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

The Role

You enjoy proactively identifying and solving engineering challenges by applying your expertise in Bitcoin and cryptographic protocols. You will implement and optimize the BitVM bridge, ensuring efficient and secure execution of its core components. Working closely with the team, you’ll contribute to research-driven development, implement complex Rust solutions, and be a trusted point of contact for improving BOB.

What you will do

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

Requirements

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

Nice to have

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

Benefits

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

Who are we?

We believe Ethereum has the potential to solve some of humanity’s most crucial coordination issues. Since our initial inception as a research group, we have sought to scale both its technology and values.

At present, the most pressing bottleneck to the growth of Ethereum is its performance and scalability. We are building the most elegant solution to this problem. We do this in the open (under an MIT open source license) because we believe in open source innovation and its ability to accelerate growth.

OP Labs contributes to the Optimism protocol, an extension to Ethereum that scales both its technology and values. Optimism enables orders of magnitude of improved performance and scalability to Ethereum while doubling down on its commitment to public goods.

The Optimism Collective leads the blockchain protocol landscape, dedicated to fostering a scalable and sustainable ecosystem. Optimism’s ethos, in sync with Ethereum's vision, tackles pivotal coordination challenges of the digital age. Optimism’s goal is to harmonize private incentives with public good, shaping a resilient future for the Internet. Optimism’s scope spans diverse areas like Gaming, DeFi, NFTs, and Enterprise.

Position Overview:

Are you ready to help shape the future of Ethereum? At OP Labs, we’re at the forefront of scaling Ethereum through the OP Stack, introducing groundbreaking features like interoperability and new multichain paradigms. As part of our Developer Experience (DevX) team, you'll have the unique opportunity to lead this transformation by building and advocating for tools that make Superchain development seamless and accessible.

In this role, you won’t just be working with tools like Foundry, Viem, and Wagmi—you’ll be at the cutting edge of new paradigms, tinkering with the latest technologies, collaborating with top developers in the ecosystem, and guiding them to unlock new possibilities. You’ll be the bridge between the OP Stack and application developers, using your expertise to directly influence the next generation of decentralized applications.

If you're passionate about building in the open, thrive on tinkering with new technologies, have full stack experience and love being an active voice in the developer community, we'd love to hear from you!

What are the role responsibilities?

Your north star is to serve app developers building on the Superchain via several workflows:

• Build and maintain Developer tooling: Actively contribute to the improvement of our developer tools like supersim and super-cli.

• Build and Maintain public API/Services: Build tools like relayers, faucets, and specialized APIs that enable developers to build seamless superchain UX.

• Community engagement: Interact with the developer community to gather feedback and share it internally to help drive product enhancements.

• Internal collaboration: Work closely with engineering, product, and marketing teams across the organization to align on product specs and requirements and ensure our tools target the right use cases and personas.

• Open source contributions: Prefer open source efforts, working in the open to improve the superchain developer experience.

What skills do you bring?

• Strong background in full stack software engineering with experience building full stack application and APIs (experience building developer tools and/or blockchain applications is nice to have, as is some understanding of JSON-RPC and the EVM).

• Our code is largely written in Typescript, Solidity, and Golang. You should be comfortable writing in these languages or confident that you can pick them up quickly.

• History of contribution to open source projects.

• A deep interest in improving tools for developers and making the development process easier, more efficient, and more enjoyable. Empathy for the developer experience and unending curiosity about their needs.

• You should feel comfortable owning the infrastructure part of the application stack (CI/CD, databases, k8s, etc.) when needed, or be willing to learn.

What will you like about us?

• We take care of our employees. Competitive compensation, fully paid medical, dental, and vision, and a 4% 401K match—learn more about our benefits, culture, and all recruiting FAQ here.

• We take pride in the accomplishments of our teammates and support each other in doing the best work of our careers.

• Our team is a diverse group of people from varied backgrounds. We cherish our eclecticism and consider it a great strength.

• We’re fully remote, deeply engaged, highly skilled, and like to have fun.

• We think long-term. Our founders have been scaling Ethereum since 2015.

Apply Now:

Blockchain.com is the world's leading software platform for digital assets. Offering the largest production blockchain platform in the world, we share the passion to code, create, and ultimately build an open, accessible and fair financial future, one piece of software at a time. We are looking for Kotlin and Solidity Developers with experience on blockchain protocols and EVM networks. As a Back-End Engineer on the DeFi team, you will be working on a wide array of projects, from scaling our non-custodial wallet’s network support to writing smart contracts.  Additionally, you will be responsible for integrating with 3rd party vendors that provide data for crypto tokens, DApps and DAOs, as well as efforts to further centralize logic that currently exists on our wallet clients, into backend services. As a Senior Back-End Engineer you should lead by example - driving the technical discussions, influencing the approach and making a positive impact on the team's development by advocating the best engineering practices. WHAT YOU WILL DO

Build solid, reliable software to handle multiple networks and support our ever growing family of products and user base Be a part of a dedicated engineering team committed to applying the highest standards and shipping secure and performant systems Work in the core of Blockchain.com’s solution, interacting directly with multiple blockchains Work extensively with open source technologies (Docker, Kafka, MySQL) Ensure security is at the forefront of everything you do Work within interdisciplinary teams to continually deliver the highest quality products to our users Optimize existing systems for scalability, extensibility and performance whilst building out reusable, modular code for use across Blockchain.com's products

WHAT YOU WILL NEED

The foremost quality for this position or any position at Blockchain.com is integrity Solid experience in Typescript, Solidity  Experience working with Blockchain technologies (EVM or non-EVM chains, and defi protocols) You are highly motivated, self-driven, and passionate about cryptocurrencies You know how blockchain systems work, and preferably, you worked closely with at least one You find your way around a novel problem you haven't faced before You possess an innate curiosity, you know multiple programming languages, you are a strong advocate for the best engineering practices and thrive on learning new technologies You take a pragmatic approach to developing clean solutions to complex problems You pride yourself on consistent high levels of test coverage, strong technical documentation and effective monitoring You take full responsibility for all the projects you work on

COMPENSATION & PERKS

Competitive full-time salary based on experience and meaningful equity in an industry-leading company Awesome office location in the heart of Paris - working 4 days in the office is mandatory  Work from Anywhere policy  The opportunity to be a key player and build your career at a rapidly expanding, global technology company in an exciting, emerging industry Unlimited vacation policy; work hard and take time when you need it Performance-based bonuses paid in cash Apple equipment provided by the company

Blockchain is committed to diversity and inclusion in the workplace and is proud to be an equal opportunity employer. We prohibit discrimination and harassment of any kind based on race, religion, color, national origin, gender, gender expression, sex, sexual orientation, age, marital status, veteran status, disability status or any other characteristic protected by law. This policy applies to all employment practices within our organization, including hiring, recruiting, promotion, termination, layoff, recall, leave of absence, and apprenticeship. Blockchain makes hiring decisions based solely on qualifications, merit, and business needs at the time. You may contact our Data Protection Officer by email at email. Your personal data will be processed for the purposes of managing Controller’s recruitment related activities, which include setting up and conducting interviews and tests for applicants, evaluating and assessing the results thereto, and as is otherwise needed in the recruitment and hiring processes. Such processing is legally permissible under Art. 6(1)(f) of Regulation (EU) 2016/679 (General Data Protection Regulation) as necessary for the purposes of the legitimate interests pursued by the Controller, which are the solicitation, evaluation, and selection of applicants for employment. Your personal data will be shared with Greenhouse Software, Inc., a cloud services provider located in the United States of America and engaged by Controller to help manage its recruitment and hiring process on Controller’s behalf.  Accordingly, if you are located outside of the United States, your personal data will be transferred to the United States once you submit it through this site. Because the European Union Commission has determined that United States data privacy laws do not ensure an adequate level of protection for personal data collected from EU data subjects, the transfer will be subject to appropriate additional safeguards under the standard contractual clauses.  Your personal data will be retained by Controller as long as Controller determines it is necessary to evaluate your application for employment.  Under the GDPR, you have the right to request access to your personal data, to request that your personal data be rectified or erased, and to request that processing of your personal data be restricted. You also have the right to data portability. In addition, you may lodge a complaint with an EU supervisory authority.

Apply Now:

Blockchain.com is the world's leading software platform for digital assets. Offering the largest production blockchain platform in the world, we share the passion to code, create, and ultimately build an open, accessible and fair financial future, one piece of software at a time. We are looking for a skilled, hands-on DeFi Software Engineer to sit on our Institutional Trading team. You will play a critical role in building financial and crypto-native trading strategies. As a Defi Software Engineer you will implement automated trading strategies on various blockchains, work with traders / quants to generate revenue, and be part of one of the most competitive trading desks WHAT YOU WILL DO

Develop code (in Rust / Solidity / Python) to automate DeFi trading strategies Work closely with traders / quants on our Institutional Trading team  Implement best practice code to automate strategies that run on DApps (Decentralized Apps) and take advantage of blockchain-specific implementation (MEV for example, but not limited to this)

WHAT YOU WILL NEED

Excellent technical skills in Rust or Solidity,  Excellent understanding of blockchains / decentralized apps, The desire to be part of a small, successful team and scale it even further, A strong sense of ownership and responsibility in a fast-paced environment, You know how blockchains / decentralized apps work, preferably, you worked closely with them on the technical level before, You take full responsibility for all the projects you work in.

COMPENSATION & PERKS:

Full-time salary based on experience and meaningful equity in an industry-leading company Hybrid model working from home & our office in London Unlimited vacation policy; work hard and take time when you need it Work from anywhere policy Apple equipment The opportunity to be a key player and build your career at a rapidly expanding, global technology company in an emerging field Flexible work culture  

Blockchain is committed to diversity and inclusion in the workplace and is proud to be an equal opportunity employer. We prohibit discrimination and harassment of any kind based on race, religion, color, national origin, gender, gender expression, sex, sexual orientation, age, marital status, veteran status, disability status or any other characteristic protected by law. This policy applies to all employment practices within our organization, including hiring, recruiting, promotion, termination, layoff, recall, leave of absence, and apprenticeship. Blockchain makes hiring decisions based solely on qualifications, merit, and business need at the time. You may contact our Data Protection Officer by email at email. Your personal data will be processed for the purposes of managing Controller’s recruitment related activities, which include setting up and conducting interviews and tests for applicants, evaluating and assessing the results thereto, and as is otherwise needed in the recruitment and hiring processes. Such processing is legally permissible under Art. 6(1)(f) of Regulation (EU) 2016/679 (General Data Protection Regulation) as necessary for the purposes of the legitimate interests pursued by the Controller, which are the solicitation, evaluation, and selection of applicants for employment. Your personal data will be shared with Greenhouse Software, Inc., a cloud services provider located in the United States of America and engaged by Controller to help manage its recruitment and hiring process on Controller’s behalf.  Accordingly, if you are located outside of the United States, your personal data will be transferred to the United States once you submit it through this site. Because the European Union Commission has determined that United States data privacy laws do not ensure an adequate level of protection for personal data collected from EU data subjects, the transfer will be subject to appropriate additional safeguards under the standard contractual clauses.  

Apply Now:

This role is for Weekday's client.

Please note this is a contract position, with possible extension based on project needs.

Job Overview: We are seeking a highly skilled Blockchain Developers to join our network and collaborate with cutting-edge startups. You will be responsible for designing, developing, and implementing blockchain-based applications, ensuring security, scalability, and efficiency.

Key Responsibilities:

1. Develop and maintain blockchain-based applications and smart contracts.
2. Design and implement secure blockchain protocols and architectures.
3. Collaborate with product managers, designers, and other engineers to integrate blockchain solutions.
4. Ensure the security, performance, and scalability of blockchain applications.
5. Research and stay up to date with emerging blockchain technologies and trends.
6. Optimize blockchain applications for efficiency and low transaction costs.
7. Conduct code reviews and provide technical guidance to team members.

Required Qualifications:

1. Bachelor's degree in Computer Science, Engineering, or a related field.
2. 3+ years of experience in blockchain development.
3. Proficiency in blockchain platforms such as Ethereum, Hyperledger, or Solana.
4. Strong programming skills in Solidity, Rust, or Go.
5. Experience with smart contract development and security best practices.
6. Knowledge of cryptographic principles and distributed ledger technologies.
7. Familiarity with blockchain consensus mechanisms and decentralized applications (dApps).
8. Ability to work independently and manage multiple projects in a fast-paced startup environment.

Preferred Qualifications:

1. Experience working in a startup or consulting environment.
2. Understanding of tokenomics and DeFi applications.
3. Familiarity with Web3.js, Truffle, Hardhat, or other blockchain development frameworks.
4. Exposure to cloud-based blockchain infrastructure (AWS, Azure, GCP).
5. Strong problem-solving skills and ability to optimize blockchain performance.

Apply Now:

Apply Now:

About CoW DAO

CoW DAO is on a mission to protect Ethereum users from the dangers of DeFi. It does this by supporting the development of CoW Protocol, CoW Swap, MEV Blocker, and CoW AMM, and by funding values-aligned projects through the CoW Grants Program.

CoW Protocol is the second-largest DEX aggregator by monthly volume and the first-largest intents-based exchange. MEV Blocker is currently involved in ~4% of all Ethereum transactions, making it the category leader. CoW AMM is the only live AMM that protects LPs from LVR (loss-versus rebalancing).

As a member of CoW DAO’s core team, you will have the opportunity to shape these essential products, and contribute to the Ethereum ecosystem more broadly.

About the Role

Location: We are a fully remote team, and although we hire almost globally, there is a preference for this role to be based in Europe or remote +/- 4 hours CEST time

Please note we’re not hiring from the US, Australia, or New Zealand

Position: Full-time contractor

We’re looking for an experienced Backend Team Lead who will manage and guide our engineering team while also being highly technical. This person will help resolve problems, offer mentorship, and ensure the team delivers clean, maintainable code while avoiding over-complication. You’ll work closely with our Tech Lead, collaborating on both high-level technical decisions and hands-on execution to drive the team’s success.

This position is a mix of technical expertise and people management—ensuring that the team has everything they need to succeed, both technically and personally.

What you will do

• Lead, support, and mentor the backend team: Guide team members in developing their technical skills, improving performance, and overcoming challenges while providing mentorship, feedback, and opportunities for career growth
• Encourage clean and simple solutions: Foster a development culture that prioritizes simplicity, efficiency, and streamlined workflows to enhance productivity and maintainability
• Code reviews and technical guidance: Perform code reviews, provide constructive feedback, and ensure that the team’s code adheres to best practices and high-quality standards
• Work closely with the Tech Lead: Collaborate closely with the Tech Lead to support the team in implementing solutions, overcoming obstacles, and ensuring smooth development processes
• Problem-solving: Identify roadblocks or inefficiencies in the team’s processes and help resolve them in a way that aligns with CoW’s long-term goals
• Collaborate with cross-functional teams: Work closely with product, research, and other engineering teams to ensure smooth delivery of features and high-quality results

Our Tech Stack

• Backend Code: Rust, Tokio, Cargo, Git (https://github.com/cowprotocol/services)
• Infrastructure: Pulumi, AWS, Docker, Kubernetes, Grafana, Prometheus, Elasticsearch, Flux
• Other codebases: Typescript, Python, Solidity

Who you are

• Technical expertise: You have experience in backend development (languages such as Rust, Go, Python, etc.) and building distributed systems. While Web3 experience is a plus, it’s not a requirement.
• People-oriented leader: You have experience leading teams, providing mentorship, and fostering a growth-oriented environment. You know how to motivate people, resolve conflicts, and build trust within a team
• Tech-Savvy Leader: You can step in and help with complex technical challenges, but your main focus is on the people and processes
• Simplifying Solutions: You care about and understand the importance of keeping things simple and ensuring that the team follows best development practices
• You work well with others: You have a collaborative mindset and can work with both technical and non-technical team members and ensure everyone is aligned with the team’s goals
• Code quality: You are experienced in code reviews and are passionate about helping team members improve through constructive feedback
• Remote team leadership experience: As a remote-first company, we need a Team Lead with a strong track record of managing fully remote teams, fostering collaboration, and maintaining high engagement and productivity across different time zones
• Excited about web3: While you don’t need prior web3 experience, you’re eager to explore the space, especially with EVM chains, and learn more about DeFi and blockchain technologies

What we can offer you

• Flexible work environment: Join our hub in Lisbon or work remotely
• Token plan: Have a stake in our mission and shape the future of CoW DAO
• Periodic gatherings: Enjoy opportunities to connect with the rest of the team through regular trips
• Conference allocation: Stay up-to-date with ecosystem advancements using our conference budget
• Learning budget: Use our learning budget to support your higher ambitions
• Hardware budget: Take advantage of a hardware budget for acquiring necessary equipment
• Make an impact: You are joining a startup where you can make a huge difference. Your work matters!
• Flat hierarchies mean fewer processes and bureaucracy - see more of your ideas come to life!
• Flexible work and vacation times: Prioritize work-life balance through our robust flexible work policy and vacation allowance
• Growth: If you’re someone who loves taking the initiative and getting things done, CoW offers lots of opportunities for your individual growth

Referral Program

Earn 6.000 USDC or USD with the 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 diverse 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.

About Oasis: Designed for the next generation of blockchain, the Oasis Network is the first privacy-enabled blockchain platform for open finance and a responsible data economy. The Oasis Protocol Foundation supports projects focused on building privacy-preserving applications on top of the Oasis Network. About The Role: As a Software Engineer - Solutions and Integrations, you will play a critical role in ensuring the successful adoption and integration of the Oasis Network and tooling. You will work closely with our product, engineering, business development and developer relations teams to build demo dApps and PoC’s to demonstrate real-world user cases for prospect partnerships. You’ll also be working with external engineering teams to design and implement custom integrations between Oasis and other products such as infrastructure tooling, exchanges and other dApps that want to utilize Oasis Privacy Layer and the Oasis Sapphire (Oasis confidential EVM). What You’ll Be doing:

Collaborate with prospects and current partners to understand their technical requirements and pain points, and architect tailored blockchain-based solutions to address their needs Design, develop, and deploy secure and scalable blockchain integrations, leveraging our protocol's unique features and capabilities Configure and customize our protocol to seamlessly integrate with clients' existing systems and infrastructure Provide technical guidance and support to developers and partners in our ecosystem throughout the implementation and integration processes  Continuously monitor and optimize deployed solutions to ensure optimal performance, security and reliability Share technical expertise by contributing to our technical documentation, conducting online product walkthroughs and demos, and participating in industry events Identify opportunities for product improvements and new use cases based on partner feedback and market trends Be an advocate and evangelist of Oasis products within web3 communities. 

What We’re Looking For:

Bachelor's degree in Computer Science, Engineering, or a related technical field Professional experience in software development, systems integration, or blockchain technology using EVM based architecture Deep understanding of blockchain architecture, consensus mechanisms, and distributed ledger technologies Passion and interest in security best practices within distributed systems and dApp development Proficiency in programming languages such as TypeScript, JavaScript and Solidity and best practices for smart contract development Strong problem-solving and troubleshooting skills, with the ability to think creatively and adapt to evolving requirements Ability to rapidly build and present PoC’s in high-pressure environments. Excellent communication and client-facing skills, with the ability to translate technical concepts into business value Passion for the blockchain ecosystem and a commitment to staying up-to-date with the latest industry trends and best practices.

 We’d Love If You Have:

Passion for Web3 and data privacy Experience contributing to an open source project in Web3 or similar Exposure to working in a startup or high-growth environment Experience in public speaking and hosting workshops.

What Our Interview Process Looks Like:

30 Minute Call with Recruiter Technical Interview - Led by Engineering Manager & Peer Presentation to Panel Final Round

What You’ll Get For Joining:

Work with a welcoming and highly talented team Get paid competitive compensation in USDC Vesting token grants and incentives Attend industry-conferences around your region Remote-first working

Apply Now: