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The multi-chain liquidity gateway. A DeFi middleware to build crypto-enabled businesses.
Senior Backend Engineer – Perps
Location
United Kingdom
Posted
59 days ago
Salary
€90K - €130K / year
Seniority
Senior
Job Description
Senior Backend Engineer – Perps
LI.FI
• Extend LI.FI’s API stack to include Hyperliquid ecosystem projects and feature sets • Design, build, and maintain backend services using Node.js and TypeScript • Work with MongoDB, Redis, and MySQL to support high-throughput, low-latency trading workflows • Collaborate closely with the Expansion PM and other backend engineers to improve integrations, routing, and user flows, and help evaluate new opportunities for feature expansion • Ensure robust, high-quality backend code with a strong focus on scalability, performance, and reliability for same-chain and cross-chain trading • Participate in code reviews, system design discussions, and technical documentation
Job Requirements
- 5+ years of experience in crypto, ideally building or integrating production-grade DeFi or trading systems
- Strong backend engineering background with hands-on experience in Node.js and TypeScript
- Database experience with MongoDB, Redis, and MySQL in performance-sensitive backend environments
- Hyperliquid architecture familiarity: Understanding of builder codes (spot, perps), HIP-3, precompiles, and HyperEVM at a design level, with the ability to keep up with evolving documentation
- Hyperliquid focus: Genuine interest in the Hyperliquid ecosystem; prior projects, integrations, or self-driven exploration are highly valued
- Orderbook fundamentals: Solid understanding of orderbook mechanics and comfort working with programmatic trading features
- EVM & integration patterns: Experience building backend systems that integrate with EVM-based protocols; frontend or modal design work is not expected
- Independence: Ability to drive integrations and propose new features with minimal oversight while collaborating effectively in a remote-first team
- Cross-chain experience: Background working with bridges or backend infrastructure supporting multi-chain environments is a strong plus
Benefits
- 30 days of PTO
- Flexible remote days
- Flexible working hours
- Equity participation from day 1
- Entitlement to work computer (choice of equipment)
- An annual 1,000€ personal development budget once you have worked 6+ months (pro-rated the first year)
- A one-time 1,000€ remote budget to use on coworking, office setup, etc.
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