Card & wallet infrastructure
End-to-end card issuance and lifecycle management for a multi-currency payments platform, plus the compliance and liquidity tooling around it.
- KYC state machine with enforced transitions and an admin audit trail
- Compliance-gated freeze/unfreeze controls with atomic lien updates
- Liquidity alerting job with configurable Slack thresholds
Stack: Go, PostgreSQL, MongoDB, Redis, RabbitMQ