Senior Blockchain Engineer
Zero Hash provides B2B infrastructure enabling any platform to integrate digital assets through APIs for buying, selling, custody, and payment services.
Funding history
About zerohash
Zero Hash helps businesses add cryptocurrency services by providing API infrastructure that handles regulatory and technical complexity. With it, companies can offer trading, custody, payment processing, and rewards programs without building infrastructure from scratch. Zero Hash serves neo-banks, fintech platforms, and investment services seeking to integrate crypto capabilities.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will design and build blockchain integration services for transaction signing, deposits, and confirmation tracking across multiple networks. You will develop Go gRPC microservices, implement reliable transaction state machines, integrate custody providers, monitor networks, respond to incidents, and support client technical teams.
Requirements
- 5+ years of software engineering experience, preferably in FinTech
- Proficiency with Go
- Understanding of blockchain technologies, protocols, and applications
- Experience with gRPC and Protocol Buffers
- Familiarity with message brokers or event-streaming systems
- Experience with MongoDB or another document database
- Understanding of SQL and relational database schema design
- Problem-solving skills for complex distributed systems
- Verbal and written communication skills
Responsibilities
- Design and build blockchain integration services for transaction signing, deposit processing, and confirmation tracking
- Build and maintain gRPC microservices in Go using an event-driven architecture and NATS JetStream
- Implement reliable transaction state machines with idempotency, distributed locking, and chain-reorganization handling
- Integrate custody providers for transaction signing and wallet management
- Monitor blockchain networks for deposits, confirmations, and anomalies
- Participate in an on-call rotation and respond to production incidents
- Communicate directly with client technical teams when necessary
