Senior Backend Engineer (Go)

Own the architecture and development of the core account and wallet systems, building high-concurrency, low-latency, horizontally scalable services in Go

Own the data model, transaction design, and concurrency strategy of the financial core, and define system-wide idempotency and consistency standards

Lead domain modelling and module boundary design; define API contracts and the integration standards other systems build against

Lead the migration of financial data from existing production systems, and establish reconciliation, alerting, and discrepancy-handling processes

Drive performance optimisation and reliability engineering on critical paths (capacity planning, rate limiting and degradation, phased rollout and rollback), build out observability (logging, metrics, distributed tracing), and drive SLO definition and post-incident review practice

Contribute to technology selection, review all code involving monetary logic, produce technical design documentation, and mentor junior and mid-level engineers