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CoW DAO · Lisbon · Senior · Remote
About the role
Location: We are a fully remote team, and although we hire globally, there is a preference for this role to be based in Europe or remote +/- 4 hours CEST time
Position: Full-time contractor
We are looking for an enthusiastic, self-motivated, senior backend engineer to help us build the next generation of decentralised trading protocols. As a dedicated backend engineer, you will gain ownership of our existing backend services and influence the creation, design, and execution of future features and products. You will work on technically challenging aspects of our off-chain services and our developer-facing APIs and help ensure the delivery of reliable and performant features to improve CoW Protocol.
What you will do
*Architect and design our off-chain services (core auction protocol as well as the orderbook) to support feature growth and the rapidly changing requirements that come from being an application on a constantly evolving blockchain.
Browse by
*While your focus will be writing concurrent backend systems in Rust, you will also interact with our Smart Contracts written in Solidity and develop your understanding of auction mechanisms and DeFi protocols
*Work closely with researchers and the product team to ship features and come up with new solutions for challenging technical problems
*Deliver high-quality code for features from concept until production (including state-of-the-art monitoring of our production systems)
*Help our engineering team maintain and improve the reliability of the existing features and join in the on-call rotation
*Give thoughtful and in-depth code reviews of your colleagues’ contributions to our open-source codebase
Our Tech Stack
*Backend Code: Rust, Tokio, Cargo, Git (https://github.com/cowprotocol/services)
*Infrastructure: Pulumi, AWS, Docker, Kubernetes, Grafana, Prometheus, Elasticsearch
*Other codebases: Typescript, Python, Solidity
Who you are
*You have at least 1 year + of productional experience with Rust (experience with C++ is a great bonus)
*You have excellent computer science, programming, and algorithmic skills
*Experience in web3 (ideally DeFi and Ethereum blockchain)
*Experience with operating, maintaining, and architecting complex software systems
*You care deeply about the quality, readability, observability, and testability of your code
*You proactively give technical direction to improve performance, prevent issues, optimise data usage, and refactor the codebase
*You are a team player, strong communicator, and gladly share your expertise with others
*You collaborate effectively with a remote-first team on a large, open-source codebase
*Ideally, someone senior who can mentor colleagues and provide direction.
*You are excited to explore and gain experience with Ethereum
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 at cow.fi/careers.