Senior Java Developer (Trading Platform)

The Trading Infrastructure team is building a high-performance, front-to-back Trading Platform that supports multi-asset trading. The platform is designed to handle financial instruments with low-latency execution, robust risk controls, and seamless integration across trading, risk, operations, and finance workflows.

The system is built with a modular architecture encompassing core components such as market data feeds, order gateways, execution algorithms, risk engines, UI dashboards, middle office reconciliation, and account infrastructure. We emphasize event-driven, deterministic system design, real-time observability, and strong security.

Our tech stack includes Java (low-latency), Python, Web UI (React/Ag-Grid), Aeron, ClickHouse, Kubernetes, and modern CI/CD tooling, with a strong focus on automation, scalability, and performance. AI-assisted development tools are also leveraged to boost productivity and quality across the team.

Responsibilities

1. Design and develop core backend systems including market connectivity, order routing, execution engine, risk, and position tracking.
2. Implement ultra-low-latency and GC-free components using best practices in lock-free and off-heap programming.
3. Apply event-driven and fully deterministic design principles to ensure traceable and predictable system behavior.
4. Collaborate closely with product and trading teams to translate requirements into performant, production-ready solutions.
5. Participate in performance profiling, JVM tuning, and debugging complex issues in production.
6. Develop and maintain automated test suites and CI/CD pipelines.
7. Engage in code reviews, architecture discussions, and technical audits to ensure high standards across the codebase.
8. Use AI-driven coding tools (e.g., GitHub Copilot or similar) to accelerate development and improve productivity where appropriate.

Requirements

1. 8+ years of Java backend development experience, preferably in a trading or real-time system environment.
2. Deep understanding of Java core internals, multithreading, memory models, and garbage collection.
3. Proven experience in GC-free or low-GC programming, including use of sun misc Unsafe, direct buffers, and memory-mapped files.
4. Familiarity with Aeron, SBE, or other low-latency messaging libraries.
5. Strong grasp of event-driven architecture and experience designing fully deterministic systems.
6. Solid knowledge of time-series and analytical databases like ClickHouse; exposure to kdb+ or InfluxDB is a plus.
7. Experience with distributed systems, message queues, and performance tuning at the network and application layer.
8. Comfortable using AI-powered development tools to enhance code quality and development speed.
9. Strong testing discipline including TDD, benchmarking, and resilience testing.

Communication and Collaboration

1. Proficient in English (spoken and written); Chinese or other languages are a plus but not required.
2. Comfortable working in a global team with colleagues across APAC, EMEA, and North America.
3. Strong communication skills; able to interface across all levels from senior leadership to engineers and stakeholders.
4. Able to collaborate effectively with people from different cultural and technical backgrounds, aligning tech decisions with business goals.