Senior C++ Software Engineer - Systematic Trading 12-month contract - £600 to £850/day (Inside IR35) Global Trading andamp; Supply | High-Performance Systematic Trading Technology As a Senior C++ Software Engineer, you''ll work closely with technologists, quants, and traders to design, optimise, and scale our in-house global derivatives and systematic trading platform. You''ll operate across the full stack of proprietary trading technology - from ultra-low-latency exchange connectivity to strategy engines - with the autonomy and impact expected in a high-performance engineering culture. You will be instrumental in ensuring ultra-low latency, deterministic performance, reliability, and scalability while shaping the next generation of our systematic and algorithmic trading systems. What You''ll Work On Exchange Connectivity Develop software that interacts with major global futures exchanges using native APIs andamp; protocols (FIX, WebSocket, HTTP). Maintain and extend testing suites ensuring robust, consistent connectivity. Optimise exchange communication through Kernel bypass, TLS tuning, and advanced networking techniques. Study and align with detailed exchange behaviours and microstructure. Work across C++, Rust, Python, and Typescript as needed. Systematic andamp; Algorithmic Trading Build and enhance systematic trading strategies from quant and trader requirements. Improve performance, reliability, and stability of the systematic and algorithmic trading engines. Enha