Senior Backend Engineer - Perps

LI.FI is simplifying multi-chain DeFi for traditional financial institutions, fintechs and service providers by offering a unified API to access all on-chain liquidity across major blockchains for best price same-chain and cross-chain swaps. We are a passionate team on a mission to enable a fairer, more decentralised world. Apart from the tech, we care a lot about user experience and aim to make complex technologies accessible to everyone.

We are looking for a Senior Backend Engineer with a dedicated focus on integrating Hyperliquid functionalities into our API platform. This role is backend-only—no frontend or design work required—letting you shape core integrations at the infrastructure layer. The ideal candidate is excited about Hyperliquid and its protocols, eager to help us distribute programmatic trading features (e.g., TWAP, perps) to the broader DeFi ecosystem through performant backend systems.

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  Extend LI.FI’s API stack to include Hyperliquid ecosystem projects and feature sets

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  Design, build, and maintain backend services using Node.js and TypeScript

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  Work with MongoDB, Redis, and MySQL to support high-throughput, low-latency trading workflows

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  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

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  Ensure robust, high-quality backend code with a strong focus on scalability, performance, and reliability for same-chain and cross-chain trading

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  Participate in code reviews, system design discussions, and technical documentation

• Embrace your own differences

• Respect and welcome the unique qualities of others

• See others’ differences as an opportunity to grow

• Own tasks end-to-end

• Hold yourself to a high bar for execution

• Make bold decisions, and be accountable

• Understand your limitations and seek for help

• Try - don’t be afraid to fail

• Learn - don’t make the same mistake twice

• Adapt - grow with the experience

• Take the time to get to know and understand each other better

• Don’t take yourself too seriously and keep it light-hearted

• Fun should be coming from a place of love and respect

• Annual team offsites (Thailand in 2023, Vietnam in 2024, Marrakech in 2025, Crete in 2026; memories we'll never forget. Already dreaming about where 2027 will take us!)

• 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.

If you join us as an independent contractor, you’re only entitled to the first five benefits of this list.

This role is engaged via employer of record (EOR) or independent contractor arrangement.

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LI.FI is an equal opportunity employer. We encourage individuals of all backgrounds to apply. Join us in our dedication to fostering a workplace that values and respects each team member's unique contributions.

Shortlisted candidates will undergo a comprehensive interview process, including a people operations interview, a take-home assignment, a meet-the-team & founder interview, and a reference check.

For more information, visit our page detailing our hiring process!