Job Description

London | On-site / Hybrid

• Build and operate high-performance market data systems used in live, global trading environments
• Work closely with traders and quantitative researchers on real-time problems with direct PnL impact
• Modern C++ codebase (C++20+) with exposure to Python and distributed systems
• Opportunity to work across both greenfield development and complex, business-critical systems

The Role

An established, highly technical trading organisation is hiring a C++ Software Engineer into its London engineering team, focused on market data and exchange connectivity. The role sits close to the trading desk and plays a key part in supporting real-time decision-making across multiple asset classes and venues.

You will design, build, and maintain low-latency systems responsible for ingesting, normalising, and distributing large volumes of market data. Engineers in this team work from high-level requirements, are expected to develop a strong understanding of trading workflows, and collaborate directly with traders and quantitative researchers on a daily basis.

The environment rewards autonomy, technical ownership, and engineers who are comfortable operating in production-critical systems.

Key Skills and Experience Required

• Strong professional experience building high-performance, production-grade systems
• 5+ years’ experience in modern C++ (C++17/20 or later), including multithreaded development
• Experience with Python or another scripting language for tooling and automation
• Solid understanding of network programming, including TCP/UDP, multicast, and WebSockets
• Familiarity with messaging systems, APIs, and service-oriented architectures
• Experience working on both legacy systems and new platform builds
• Background in trading, market data, or real-time systems is advantageous but not essential
• Degree in Computer Science, Engineering, or a related technical discipline

Why Consider This Opportunity

• High-impact role within a London-based trading engineering group
• Direct collaboration with traders and researchers, not a remote “support” function
• Technically demanding systems with real-world performance constraints
• Strong compensation and long-term growth for senior individual contributors

If this aligns with your background and you are open to exploring a London-based role in trading technology, please apply or get in touch for a confidential discussion.