Core Linux Engineer – Quant Trading

In this role you will help build and optimize a high-performance Linux-based platform powering complex proprietary trading systems. You will join a highly skilled, collaborative team within a global, leading quant trading firm that values automation and deep engineering rigor. The position offers exposure to low-latency, scalable infrastructure and a culture of learning and experimentation. You will work on challenging problems at the core of the trading stack, shaping the technology that drives execution and reliability. This is a high-impact opportunity for engineers who thrive in demanding, innovation-focused environments in London.

• Maintain and enhance the Linux-based infrastructure powering proprietary trading systems
• Analyse performance bottlenecks and implement solutions to improve efficiency and stability
• Develop and integrate in-house and open-source components with a focus on automation
• Collaborate with cross-functional teams to diagnose problems and implement robust fixes
• Automate routines and tooling to reduce human error and accelerate delivery
• Troubleshoot complex system issues using advanced debugging tools

• STEM education background, ideally Computer Science
• Deep knowledge of operating systems, predominantly Linux
• Fluent on the command line and shell scripting
• Strong programming capabilities (C; Go, Python, Rust, Julia, Java, C++, etc. are a plus)
• Solid understanding of networking protocols
• Experience with debugging tools such as gdb, perf, DTrace and SystemTap
• Excellent troubleshooting and problem-solving abilities
• Ability to analyse technical problems clearly and concisely

• Clear and concise communication
• Strong troubleshooting mindset
• Collaborative and knowledge-sharing attitude
• Linux system internals
• Shell scripting
• C programming