Jobs in London - Quant C++ Developer - Mid-Level | Electronic Market Making | London • UK

Company: Selby Jennings London

UK

We're working with a top-tier trading firm hiring a mid-level C++ developer to join their Electronic Market Making desk in London. This team builds ultra-low-latency systems to provide continuous buy and sell quotes across global exchanges-capturing opportunities in milliseconds and driving tight spreads in highly liquid markets. Key Responsibilities: Design and develop latency-critical systems using modern C++ (C++20/C++23) Build real-time infrastructure that supports quoting, pricing, and order execution Work closely with traders and quants to turn strategy into robust, production-ready code Optimise code paths for throughput and speed, from hardware to exchange connectivity Requirements: 2 - 5 years of professional experience with modern C++ (minimum C++17) and system-level programming Solid understanding of computer architecture, OS internals, and networking fundamentals Background or keen interest in competitive programming (IOI, ICPC, Codeforces, etc.) Strong problem-solving ability and the drive to work in fast-moving environments Prior experience in trading not required, but a genuine interest is essential For developers who love solving hard technical problems with real-world impact, this is a rare opportunity to join one of the most technically sophisticated desks in global trading. Please apply to learn more.