Senior Java Developer - Global Investment Bank - Hong Kong

The role:

1. Develop and maintain Equities OMS components in Java, including order lifecycle management (e.g., create/modify/cancel), state transitions, and reconciliation flows.
2. Build/consume market data and execution interfaces (e.g., FIX and internal APIs), ensuring correct message handling and robust error recovery.
3. Implement and optimize latency-sensitive services and workflows (threading/concurrency, backpressure, efficient data structures)
4. Create unit, integration, and system tests; improve test automation coverage and reliability.
5. Diagnose production issues and drive resolution using logs, metrics, tracing, and post-incident reviews.
6. Contribute to design documents, technical standards, and code reviews.
7. Support release activities including troubleshooting, regression testing, and deployment readiness.

What you offer:

1. 5+ years professional experience in Java or C# development.
2. Strong understanding of OMS concepts: order states, idempotency, message sequencing, and reconciliation.
3. Experience with FIX (preferably FIX 4.x) or other trading protocols; ability to map business events to protocol messages.
4. Solid knowledge of concurrency and performance tuning in Java (e.g., thread pools, synchronization, GC awareness).
5. Proficiency with SQL and relational data modeling.
6. Experience with CI/CD and test frameworks (e.g., JUnit, Mockito, integration test tooling).
7. Familiarity with Linux environment, debugging, and operational support practices.
8. Experience in equities trading (exchange/venue connectivity, order types, corporate actions awareness).