Senior Developer - Core Trading Technology

Requirements

• 5+ years of professional C++/C development experience on Linux, including modern C++ and multithreading
• Strong expertise in TCP, UDP, multicast, and performance trade-offs in low-latency networks
• Experience building and operating high-throughput distributed systems in production
• Familiarity with scalable I/O models (e.g., epoll, io_uring), lock-free structures, and concurrent programming
• Deep attention to detail with a rigorous approach to performance troubleshooting and optimisation
• Proficiency in system-level tools (e.g., gdb, perf, tcpdump, valgrind, wireshark)
• Comfortable working autonomously and taking ownership from problem to solution

Nice to Haves

• Scripting experience (e.g., Python, Bash) and exposure to CI/CD or observability tooling is a plus
• Prior exposure to electronic trading or exchange-facing systems is advantageous

What You'll Be Doing

• Design and implement low-latency trading systems on Linux, focused on throughput, reliability, and determinism
• Engineer scalable, high-performance distributed systems that support global real-time trading workflows
• Analyse system behaviour using low-level tools such as packet captures, core dumps, and runtime profilers
• Apply deep expertise in TCP, UDP, and multicast to understanding trade-offs in short-haul vs long-haul networks
• Continuously profile, benchmark, and optimise code to reduce latency and increase throughput
• Engage across the full software lifecycle: from architecture to debugging in live trading environments

Perks and Benefits

• QRT is an equal opportunity employer promoting diversity
• Initiatives and programs to enable employees to achieve a healthy work-life balance