Senior C++ Software Engineer, Trading Systems

About the role

The Trading Systems team at OKX builds the order, execution, position and risk infrastructure behind its global trading platform. OKX is looking for a Senior C++ Software Engineer to lead the design and evolution of the trading counter and core trading systems. The company prioritises applicants with a current right to work in Singapore who do not need visa sponsorship.

Key responsibilities

• Lead the architecture, design and development of complex, high-performance C++ trading systems.
• Design reliable distributed systems, covering consistency, fault tolerance, disaster recovery and resilience.
• Own work end to end, from proposals and design reviews through refactoring, implementation, deployment, production debugging, replay and validation.
• Solve low-level systems problems in networking, protocols, concurrency, memory management, performance and OS-level behaviour.
• Improve architecture by fixing anti-patterns such as overly coupled or "God Class" designs.
• Build quality safeguards: automated testing, failure injection, stability validation, monitoring and replay-based verification.
• Run controlled experiments to validate architectural assumptions and diagnose production issues.
• Apply AI-assisted engineering practices and raise standards through code reviews and technical discussions.
• Mentor engineers and share knowledge through documentation, playbooks and technical sessions.

Required profile

• 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.
• Proven knowledge of concurrency, multithreading, network programming and performance optimisation in Linux environments.
• Hands-on experience with distributed consistency, high availability, fault tolerance or disaster recovery.
• Strong debugging and analytical ability, with a habit of investigating root causes.
• Experience validating system behaviour with automated tests, simulation, replay or comparative experiments.
• Clear communication and collaboration skills.

Required skills

• C++
• Linux
• Nice to have: experience with exchange, brokerage or low-latency financial systems; event-driven architectures and messaging systems; Rust, Java, Go or Python; AI tools for engineering workflows; globally distributed teams.

What we offer

• Competitive total compensation package.
• L&D programs and education subsidy.
• Team building programs and company events.
• Wellness and meal allowances.
• Comprehensive healthcare schemes for employees and dependants.