Back End Developer

Mercury is hiring a Full-Time Backend Engineer

About Mercury

Mercury is a mobile-first trading app built on top of Hyperliquid. We’re bringing professional-grade DeFi infrastructure to iOS and Android, making decentralized trading accessible to everyone.

The Role

We’re hiring a full-time Backend Engineer with strong Python expertise and mobile workflow experience (iOS + Android) to power Mercury’s trading engine and mobile integrations.

You’ll work on:

 • Architecting and scaling Python-based backend systems

 • Designing and maintaining REST & WebSocket APIs used by our mobile apps

 • Building and optimizing real-time systems (execution, market data, push notifications)

 • Integrating with Hyperliquid APIs, smart contracts, and Hyperevm protocols

 • Collaborating with mobile engineers (React Native, Android, iOS) to ensure smooth backend → app workflows

 • Ensuring security, reliability, and low latency across the stack

Requirements

 • 3+ years of experience in backend engineering (Python required; Go/Rust/Node.js a plus)

 • Strong background in designing REST and WebSocket APIs

 • Familiarity with Android + iOS workflows (React Native, Swift, Kotlin, Gradle builds, CI/CD pipelines)

 • Solid knowledge of databases (Postgres, Redis, caching strategies)

 • Experience building scalable, distributed, low-latency systems

 • Comfort working in fast-paced startup environments

Nice to Have

 • Crypto/DeFi or trading infrastructure experience

 • Smart contract integrations (Solidity, CosmWasm, or EVM)

 • Prior work on mobile-first fintech or trading apps

 • Contributions to open-source projects

 • A strong presence on X (Twitter), sharing thoughts, code, or crypto/tech insights

What We Offer

 • Competitive full-time compensation (with equity/token options possible)

 • Fully remote, async-first culture

 • Direct impact: own core parts of Mercury’s backend

 • Work closely with a small, elite founding team at the bleeding edge of crypto