Senior Backend Engineer - Hyperliquid

Backend Developer for Web3 API Platform

This is a remote position. This company is a Web3 player offering a unified API to access all on-chain liquidity across major blockchains in order to simplify multi-chain DeFi for traditional financial institutions, fintechs and service providers, for best price same-chain and cross-chain swaps. They are looking for a Backend Developer with a dedicated focus on integrating Hyperliquid functionalities into their API platform. This role is backend-only (no frontend or design work required) letting you shape core integrations at the infrastructure layer. Please note: You must be located in the EMEA region. Your application will not be considered otherwise.

MISSIONS

• Extend the company's API stack to include Hyperliquid ecosystem projects and feature set
• Collaborate closely with the Expansion PM and other backend engineers to improve integrations, routing, and user flows; help evaluate new opportunities for feature extension.
• Ensure robust, high-quality backend code, focusing on scalability and reliability for same-chain and cross-chain trading.
• Participate in code reviews, system design, and documentation.

Technical ecosystem

• Backend: Typescript, EVM and integration patterns
• Hyperliquid: builder codes (spot, perps), HIP-3, precompiles, and HyperEVM
• Programmatic trading: TWAP, perps, orderbooks
• Crypto: Solana, Bitcoin (Nice to have)

Requirements

• The company prioritizes candidates who show genuine excitement for Hyperliquid and demonstrate technical familiarity with its protocols. Expect conversations where you can showcase prior Hyperliquid-related projects and discuss ideas for future integration work.
• Prior Hyperliquid work experience IS NOT a requirement per se but the employer will test your understanding through interview discussions and portfolio review.
• Interest in Hyperliquid and its protocols, eager to help the company distribute programmatic trading features (e.g., TWAP, perps) to the broader DeFi ecosystem through performant backend systems.
• Familiarity with Hyperliquid's architecture: You understand builder codes (spot, perps), HIP-3, precompiles, and HyperEVM at a design level and keep up with evolving documentation.
• Hyperliquid focus: You are passionate about the Hyperliquid ecosystem and be able to demonstrate your familiarity with the ecosystem — past projects or self-driven exploration are valued.
• Orderbook fundamentals: You grasp the mechanics of orderbooks and are comfortable working with programmatic trading features.
• Backend focus: Solid backend engineering background, especially with EVM and integration patterns; front-end or modal design work is not expected.
• TypeScript proficiency: Experience building scalable APIs and backend systems in TypeScript.
• Independence: Can drive integrations and new feature proposals with minimal oversight, collaborating effectively in a remote-first team.
• Cross-chain experience: Experience with bridges and backend infrastructure supporting a multi-chain environment is highly valued.
• Bonus: Familiarity with Solana, Bitcoin, or mobile backend development.

Benefits

• Contract: Permanent role (Remote) EMEA or APAC
• Salary: €90-130K per year on a full-time permanent work contract.
• Annual team offsites
• 30 days of PTO
• 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.

Recruitment process

• Recruiter / HR Call
• Hiring Manager Interview
• Take Home Test
• Technical Interview
• Group Interview