1inch is the DeFi ecosystem building financial freedom for everyone. 1inch products help users and builders trade, hold and track digital assets - with the self-custody, comprehensive security and the intuitive user experience they need to unlock the potential of true crypto ownership. 1inch protocols and APIs provide core infrastructure across the DeFi industry and beyond.
Your mission
At 1inch, our engineering needs evolve rapidly. We are constantly seeking exceptional Web3 and smart contract developers to join our mission.
We look for engineers with a high-agency, "Get Stuff Done" mindset and an unrelenting passion for decentralised innovation.
As part of our engineering ecosystem, you will contribute to designing, developing, and optimising the smart contracts and underlying infrastructure powering 1inch. We value sophisticated problem-solvers who can navigate the lightning-fast shifts of the crypto landscape while executing securely at scale. Working alongside our product leads and world-class engineers, your commitment to open-source excellence will keep 1inch at the absolute cutting edge of DeFi.
By applying to this talent pool, you will be fast-tracked for consideration the moment a new headcount opens in our global team. We welcome applications across all career stages—from highly capable developers early in their Web3 journey to seasoned principal architects.
What you'll do
- Contribute to the design and optimisation of scalable, secure, and high-performance blockchain architectures
- Develop, integrate, test, and maintain smart contracts and decentralised protocol components
- Conduct technical research and support proof-of-concept initiatives for new blockchain and DeFi features
- Contribute to cross-chain interoperability solutions, including bridging and atomic swap mechanisms
- Improve execution efficiency and optimise smart contract logic for gas consumption and performance
- Collaborate with engineering and security teams to identify vulnerabilities and strengthen protocol reliability
- Participate in code reviews, testing, CI/CD workflows, and engineering best practices
- Work closely with cross-functional teams to support successful product delivery and continuous improvement
Who you are
- Professional experience building and operating backend systems in production environments
- Strong proficiency in Golang, Typescript or another backend/systems programming language with practical concurrency and performance knowledge
- Solid understanding of system design fundamentals including services, data flows, reliability, and maintainability
- Familiarity with blockchain platforms, smart contracts, transaction handling, and on-chain integrations
- Experience working with containerised services and modern deployment practices
- Strong problem-solving skills and ability to work effectively in fast-paced engineering environments
- Ability to balance technical quality, scalability, and operational reliability
- At senior level, experience owning projects end-to-end and contributing to architectural decision-making
Nice to haves
- Experience contributing to open-source blockchain or Web3 projects
- Familiarity with zero-knowledge technologies or rollup architectures
- Experience building distributed systems or low-latency infrastructure
- Understanding of blockchain infrastructure automation and deployment tooling
- Experience working in high-growth startup or scale-up environments
1inch is an equal opportunity employer. We are committed to evaluating all candidates on the basis of their skills, experience, and potential — regardless of race, ethnicity, nationality, gender, age, religion, disability, or any other characteristic. We believe diverse teams build better products, and we welcome applications from all backgrounds.
