Full-time

Senior Software Engineer - Crypto

Posted by Fynity • Madrid, Community of Madrid, Spain

📍 Madrid, Community of Madrid 🕒 March 01, 2026

About the Role

I'm working with a well-established quantitative trading firm operating across global crypto markets, hiring a Senior Software Engineer to join their Trading Infrastructure team.This is not a generic backend role. The work sits right at the core of live trading operations. The systems you build will directly support real-time execution, exposure management and capital allocation across multiple exchanges.We're looking for someone who is comfortable building low-level, high impact systems where correctness really matters. If you enjoy solving complex problems, thinking deeply about failure scenarios and building software that has to perform under pressure, this will suit you.What you'll be doingBuilding backend services that coordinate actions across multiple external platformsDesigning logic to route, split and retry requests when things go wrongDeveloping systems that track balances, leverage and exposure in real timeAdding safeguards that prevent risky states and trigger automatic...

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