Go Developer (fintech/crypto)

Responsibilities

• Build new backend services in Go and improve existing products
• Integrate external providers via REST and internal services via gRPC and Kafka
• Refactor legacy services to reduce support cost, simplify architecture, remove technical debt, and improve test coverage
• Improve monitoring, logging, alerting, and security for financial flows
• Support production systems, investigate incidents, and track operation lifecycle end to end
• Provide technical mentorship within the team

Languages

Required

• Production experience with money operations in fintech or crypto: holds, debits, credits, balances, transaction lifecycle, and reconciliation
• Strong production experience with Go, PostgreSQL, gRPC / REST, and Kafka
• Experience integrating external providers via REST, including timeouts, provider-side statuses, delayed reversals, and our side / their side reconciliation
• Strong Kafka knowledge: partitions, consumer groups, offsets, rebalancing, delivery guarantees, ordering, and safe horizontal scaling