About the job
LI.FI is at the forefront of revolutionizing multi-chain decentralized finance (DeFi) for traditional financial institutions, fintechs, and service providers. We provide a unified API that allows seamless access to all on-chain liquidity across major blockchains, ensuring optimal pricing for both same-chain and cross-chain swaps. Our dedicated team is on a mission to foster a more equitable and decentralized world. We prioritize user experience and strive to make complex technologies accessible to everyone.
Overview of the Role
We are seeking a Senior Backend Engineer who will play a pivotal role in the integration of Hyperliquid functionalities into our API platform. This backend-focused position allows you to influence core integrations at the infrastructure level, without the need for frontend or design tasks. The ideal candidate is passionate about Hyperliquid and its protocols, and is driven to enhance programmatic trading features (such as TWAP and perps) within the expansive DeFi ecosystem through high-performance backend systems.
Note: Applicants must reside in the EMEA region. Submissions from outside this area will not be considered.
Key Responsibilities
Expand LI.FI’s API capabilities by incorporating projects and features from the Hyperliquid ecosystem.
Design, develop, and maintain backend services utilizing Node.js and TypeScript.
Utilize MongoDB, Redis, and MySQL to facilitate high-throughput, low-latency trading operations.
Collaborate closely with the Expansion Project Manager and fellow backend engineers to enhance integrations, optimize routing, and improve user flows, while also assessing new opportunities for feature development.
Ensure the delivery of robust, high-quality backend code with a strong emphasis on scalability, performance, and reliability for both same-chain and cross-chain trading.
Engage in code reviews, system design discussions, and maintain technical documentation.
Qualifications for Success
5+ years of experience in the cryptocurrency space, with a focus on building or integrating production-ready DeFi or trading systems.
Solid backend engineering expertise, with hands-on proficiency in Node.js and TypeScript.
Proficient in database management with MongoDB, Redis, and MySQL in high-performance backend contexts.
Familiarity with Hyperliquid protocols and programmatic trading concepts is a plus.

