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.

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=nil; Foundation has been at the forefront of Ethereum scalability solutions since 2018. With a mission to overcome the Ethereum scalability challenge, our team is dedicated to launching our own L2 solution — =nil; zkSharding, a zkRollup that securely scales Ethereum empowering web3 developers to build scalable, secure, and composable applications.

Our architecture supports parallel transaction processing across multiple execution shards, each validated by zero-knowledge proofs (ZKPs) and EVM opcode compatibility. Interoperability among these shards is seamlessly maintained through a native cross-shard communication protocol, enabling efficient and secure interactions within the network.

• Integration: Build and integrate tools like explorers, wallets, plugins, and extensions, ensuring a seamless user experience with =nil;
• Decentralized Application Development: Architect and develop the first dApps on top of =nil;, utilizing sharded architecture and multi-currency features. This involves exploring innovative project ideas or adapting existing dApps like Uniswap V2 to the =nil; ecosystem, pushing the boundaries of decentralized technology

Responsibilities

• Work on internal integrations to support =nil;, such as developing tools like the hardhat-plugin, block explorer, in-browser IDE, Block Indexer, and more. =nil; protocol is written in Go, and most integrations utilize TypeScript. Examples of existing integrations include:
  - CLI: Command-line interface for interacting with =nil; (written in Go)
  - Hardhat-plugin: Adapts requests and responses to match =nil; RPC and unique features (TypeScript)
  - Block Explorer: A tool for viewing block and message data (TypeScript)

• Develop and Design the first cross-shard dApps on top of =nil;, leveraging the sharding and multi-currency features. Examples include:
  - Adapting Uniswap V2 to =nil; by adding multi-currency support and modifying the architecture to distribute load across multiple shards.
  - Designing the architecture for an orderbook DEXto operate efficiently on a sharded blockchain.

Qualifications

• Strong engineering background with the ability to adapt to various programming languages and tech stacks as required by different projects (experience with Go, TypeScript, or Solidity is a plus)
• Willingness to learn and work with Web3 protocols and blockchain technologies, even if prior experience is limited
• Ability to design and implement scalable and secure systems in a decentralized environment
• Independence and productivity, with the ability to take ownership of projects from inception to completion
• Proficiency in English (B2+), both written and spoken, to effectively collaborate with international teams

Benefits

Apply Now:

Intetics Inc., a leading American technology company specializing in custom software development and digital solutions, is looking for a Backend Developer to help build a cutting-edge blockchain DEX platform.

Responsibilities:

• Develop and maintain the backend for a decentralized exchange (DEX) platform
• Write and optimize smart contracts for Ethereum, Polygon, or BNB (any EVM-based blockchain)
• Ensure high performance, security, and scalability of blockchain-based applications
• Collaborate with frontend and blockchain engineers

• Experience with Solidity, Rust, or Golang
• Hands-on experience with EVM-based blockchains (Ethereum, Polygon, BNB, etc.)
• Understanding of DeFi protocols and DEX mechanisms
• Strong problem-solving and analytical skills

Apply Now:

Intetics Inc., a leading American technology company specializing in custom software development and digital solutions, is looking for a Senior Frontend Developer to help build a cutting-edge blockchain DEX platform.

Responsibilities:

• Develop and enhance the decentralized exchange (DEX) platform
• Build and optimize React-based user interfaces for seamless blockchain interaction
• Collaborate with blockchain engineers and backend developers
• Ensure high performance, scalability, and security of the application

-Strong experience with React & JavaScript/TypeScript (Senior level)

Apply Now:

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

The Role: Innovating at the Intersection of AI and DeFi

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

What Will You Be Doing?

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

Requirements:

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

What We Offer:

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

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

Apply Now: