Senior/C++ Software Engineer - Selby Jennings

A leading global electronic trading and market-making firm is expanding its engineering teams and is seeking experienced C++ engineers to work on some of the most performance-critical systems in the industry.

Unlike traditional software roles, opportunities exist across multiple business lines and technology stacks, allowing engineers to focus on the areas that best align with their interests and expertise. Teams are responsible for building and optimising the systems that power global trading operations across a broad range of asset classes.

What You'll Work On

Depending on team alignment and experience, responsibilities may include:

• Designing and developing ultra-low-latency order entry systems.
• Building and optimising options trading platforms.
• Developing market data infrastructure and exchange connectivity.
• Improving execution performance through deep systems-level optimisation.
• Creating scalable distributed systems that process vast amounts of real-time data.
• Working closely with traders, quantitative researchers, and fellow engineers to solve complex technical challenges.
• Driving architectural decisions and contributing to the technical direction of critical trading platforms.

What We're Looking For

• Strong commercial experience with modern C++.
• Expertise in performance optimisation, multithreading, concurrency, and Linux.
• Strong understanding of systems programming fundamentals.
• Experience building highly performant, business-critical software.
• Excellent problem-solving skills and a passion for engineering excellence.
• Ability to thrive in a collaborative, fast-paced environment.

Beneficial Experience

• Low-latency trading systems.
• Exchange connectivity and market data.
• Options or derivatives trading technology.
• Network optimisation and kernel bypass technologies.
• High-performance distributed systems.
• Financial markets, trading, or quantitative environments.

Why Join?

• Work alongside world-class engineers, quantitative researchers, and traders.
• Significant ownership and direct impact on revenue-generating systems.
• A highly technical engineering culture where performance and innovation are valued.
• Opportunities across multiple trading desks and business areas.
• Access to challenging technical problems at exceptional scale.
• Competitive compensation, bonus potential, and long-term career growth.

This is an excellent opportunity for senior C++ engineers who enjoy solving complex performance challenges and want to build technology that sits directly at the heart of global financial markets.