OKX - Senior/Staff Software Engineer, C++ - Trading Service

• Lead the architecture, design, and development of complex, high-performance C++ trading systems. • Design reliable distributed systems, including consistency, fault tolerance, disaster recovery, and resilience strategies across system boundaries. • Own work end to end—from technical proposals and design reviews through framework refactoring, implementation, deployment, production debugging, replay, and validation. • Solve low-level systems challenges involving networking, protocols, concurrency, memory management, performance, and operating-system-level behaviour. • Drive architectural improvements by identifying systemic issues and anti-patterns, such as overly coupled or “God Class” designs, and redesigning components with clear responsibilities. • Build proactive quality safeguards, including automated testing, failure-injection scenarios, stability validation, monitoring, and replay-based verification. • Design controlled experiments to validate architectural assumptions and diagnose complex production issues beyond surface-level symptoms. • Work effectively across heterogeneous technology stacks, making sound engineering decisions at language, service, and platform boundaries. • Independently explore and apply AI-assisted engineering practices across code understanding, solution design, cross-review, incident analysis, test validation, and knowledge capture. • Raise engineering standards through thoughtful code reviews, technical discussions, and continuous improvements to development practices. • Mentor engineers and share practical knowledge through documentation, playbooks, technical sessions, and reusable frameworks. • What We Look For In You • Bachelor’s degree or above in Computer Science, Software Engineering, or a related STEM field; equivalent practical experience is also valued. • 5+ years of hands-on software engineering experience, with substantial experience building production C++ systems. • Strong experience designing and evolving complex systems, with a clear understanding of architectural trade-offs. • Proven knowledge of concurrency, multithreading, network programming, and performance optimisation in Linux-based environments. • Hands-on experience with distributed consistency, high availability, fault tolerance, disaster recovery, or other system-level reliability designs. • Strong understanding of computer systems fundamentals, including networking protocols, operating systems, memory, storage, and runtime behaviour. • A track record of taking ownership proactively, from defining the problem to delivering and validating a robust solution. • Exceptional debugging and analytical ability, with a habit of investigating why issues occur—not simply applying short-term fixes. • Experience using automated tests, simulation, replay, or comparative experiments to validate system behaviour and reliability. • Clear communication skills and a collaborative mindset; able to turn experience into documentation, standards, and practices that help the whole team.