Senior Blockchain Engineer

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

• 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 Jet Stream
• 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 Fin Tech space
• Deep proficiency with Go
• Understanding of blockchain technologies, protocols, and their applications
• Experience with gRPC and Protocol Buffers
• Familiarity with message brokers or event streaming systems (NATS, Kafka, or similar)
• Experience with MongoDB or other document databases
• Understanding of SQL and relational database schema design
• A humble and scrappy get-it-done mindset; you're resourceful and in your element going from 0 to 1
• Excellent problem solving skills — can troubleshoot complex distributed systems
• Comfort with ambiguity; the ability to independently lay out and test clear hypotheses and solve problems without well-defined direction
• Excellent verbal and written communication skills

• Bachelor's in computer science or equivalent experience
• Experience at a banking-as-a-service, brokerage-as-a-service, or payment-as-a-service business
• Experience with digital assets or centralized exchanges
• Experience integrating with blockchain custody platforms (Fireblocks, Bit Go, or similar)
• Experience with distributed systems patterns (distributed locking, idempotency, state machines, CQRS)
• Experience with smart contracts
• Familiarity with Kubernetes and observability tooling (Prometheus, Grafana, Open Telemetry)

zerohash is the leading crypto and stablecoin infrastructure platform and the operating system for digital money, powering the next generation of financial services. Founded in 2017, zerohash enables banks, brokerages, fintechs, and payment companies to offer crypto trading, stablecoin payments, and tokenized assets without having to build or manage complex blockchain infrastructure on their own.

zerohash platform supports three core pillars:
Trade, Transact, and Tokenize. Through a single integration, customers can launch regulated crypto buy, sell, and custody services; enable 24/7 stablecoin-based funding, payouts, and settlement; and issue and manage tokenized assets with built-in compliance, risk controls, and reporting. By abstracting away technical, regulatory, and operational complexity, zerohash allows partners to treat digital assets as just another financial primitive: fast, programmable, and global.

zerohash is trusted by some of the world’s most recognized financial and consumer…