Mission freelance Senior C++ Software Engineer

• Senior C++ Software Engineer

• 12 month contract - £600 to £850 per day inside

• Global Trading & Supply | High-Performance Trading Technology

As a Senior C++ Software Engineer, you'll collaborate with technologists, quants, and traders to build and optimise our in-house global derivatives trading platform. You'll work across the full stack of proprietary trading technology - from exchange connectivity to trading engines - with the autonomy and impact of a high-performance engineering culture.

You will play a key role in ensuring ultra-low latency performance, reliability, and scalability while shaping the next generation of our trading systems.

What You'll Work On Exchange Connectivity

• Develop software that interacts with major global futures exchanges via native APIs & protocols (FIX, WebSocket, HTTP).

• Maintain and extend testing suites to ensure robust connectivity performance.

• Optimise exchange communication through Kernel bypass, TLS tuning, and advanced networking techniques.

• Study and align with detailed exchange behaviours.

• Work across C++, Rust, Python, and Typescript where required.

Trading Strategies

• Build and enhance algorithmic trading strategies from trader and quant requirements.

• Increase the performance, reliability, and stability of the trading engine.

• Improve monitoring and observability alongside Trading Operations.

• Diagnose and resolve production issues (crashes, logic anomalies, latency bottlenecks).

• Support release preparation and deployment of trading engine versions.

Technical Experience

• 5+ years post-graduation C++ experience in the financial markets.

• Strong multi-threaded, asynchronous, and distributed systems engineering background.

• Deep knowledge of algorithms and data structures.

• Understanding of the full exchange-traded derivatives life cycle.

• Strong Scripting and automation skills (Python, PowerShell, C#, SQL etc.).

• Proven track record in application deployment best practices and proactive system monitoring.

Industry Experience

• 8+ years in Trading, Capital Markets, or Investment Banking environments.

• Familiarity with global futures exchanges and their native protocols.

For information please APPLY NOW!