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Backend Engineer with Rust

CoW Protocol · 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 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

Develop new functionality for both our off-chain services (optimising transaction execution, scaling order throughput, increasing protocol decentralisation) as well as our APIs (price estimation & order placement, real-time blockchain state monitoring, server-client communication channels)

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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 3+ years of experience with system programming, preferably in Rust (C++ or similar)
You have excellent computer science, programming, and algorithmic skills
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
You are excited to explore and gain experience with Ethereum

It’s a plus if you bring:

Understanding of the Ethereum blockchain ecosystem as well as understanding of general finance and/or game theory and mechanism design
Experience with operating, maintaining, and architecting complex software systems

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

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