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 FinTech 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.

Senior Blockchain Engineer

Key skills