Senior Blockchain Backend Engineer - Multi-Chain & DeFi
Summary
Designs and builds scalable backend services for high-volume on-chain transactions, owning APIs from architecture to production and leading integrations with DeFi protocols and blockchain nodes across multiple ecosystems, with a focus on latency, security, and evaluating new blockchain technology.
Fireblocks seeks an accomplished Backend/Full‑Stack Engineer to design and build scalable backend services for high‑volume on‑chain transactions. You will own API components from architecture to production, and lead integrations with DeFi protocols and blockchain nodes across multiple ecosystems.
You will evaluate new blockchain tech, optimize systems for latency and security, and collaborate with product, protocol research and platform teams to deliver reliable, secure solutions.