Senior Blockchain Engineer

About the Job zerohash is looking for a Senior Blockchain Engineer to help architect and build the infrastructure that powers digital asset transactions across multiple blockchain networks. We are a high-performing team looking for an equally ambitious and driven teammate. The right candidate for this position is detail-oriented, deeply technical, and driven.

You are eager to learn new technologies and complex systems. You build resiliency and scalability into the platform at every step. If you're looking to have a massive impact in one of the most exciting markets in decades, you will find this role challenging and rewarding in equal measure Key

Design and build blockchain integration services — transaction signing, deposit processing, and confirmation tracking — across multiple networks (EVM, Solana, Polkadot, XRP, and others) Build and maintain gRPC microservices in Go within an event-driven architecture using NATS JetStream Implement transaction state machines with reliability guarantees including idempotency, distributed locking, and chain reorganization handling Integrate with custody providers for secure transaction signing and wallet management Monitor blockchain networks for deposits, confirmations, and anomalies Participate in on-call rotation, responding to production incidents across blockchain infrastructure When necessary, communicate directly with client technical teams

5+ years of software engineering experience, preferably in the