Senior Blockchain Engineer — Go, gRPC & Multi-Network Infra

Zero Hash; United States; Remote; USD 170,000 - 250,000; Full time

Job summary

zerohash is seeking a Senior Blockchain Engineer in New York to architect and build infrastructure powering digital asset transactions across networks. You will design resilient, scalable systems and collaborate with a high-performing team to push the platform forward.

Ideal candidates have 5+ years in software engineering, deep Go expertise, and strong knowledge of blockchain protocols, gRPC, and distributed systems.

Qualifications

• 5+ years of software engineering experience, preferably in FinTech
• 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; independently lay out and test clear hypotheses and solve problems without well-defined direction
• Excellent verbal and written communication skills

Responsibilities

• Design and build blockchain integration services 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 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
• Communicate with client technical teams as needed

Skills

Go

Blockchain technologies

gRPC

Protocol Buffers

Event streaming

MongoDB

SQL/Relational DB

Distributed systems

Communication skills

On-call

Education

Bachelor's in Computer Science

Tools

NATS JetStream

Kubernetes

Kafka

OpenTelemetry

Job description

zerohash is seeking a Senior Blockchain Engineer in New York to architect and build infrastructure powering digital asset transactions across networks. You will design resilient, scalable systems and collaborate with a high-performing team to push the platform forward.

Ideal candidates have 5+ years in software engineering, deep Go expertise, and strong knowledge of blockchain protocols, gRPC, and distributed systems.