Founding C++ Engineer — Ultra-Low Latency Trading

Selby Jennings; Greater London; Hybrid; GBP 120,000 - 190,000; Full time

Job summary

Selby Jennings is recruiting founding C++ engineers for a greenfield systematic trading build in London. You will design and implement ultra-low-latency infrastructure powering a next-generation platform, including market data processing and exchange connectivity.

Collaborate with a hiring manager with expertise in HFT, kernel optimisation, and network infrastructure to shape architecture, tooling, and standards from day one.

Qualifications

• 2–15 years of C++ engineering experience in trading or performance-critical environments.
• Experience in HFT, electronic trading, market making, or latency-sensitive domains.
• Strong knowledge of Linux internals, multithreading, memory management, and performance optimization.

Responsibilities

• Design and build ultra-low-latency infrastructure powering the firm's next-generation trading platform.
• Develop market data handlers, feed processing, and normalisation pipelines.
• Create exchange connectivity, order gateways, and routing infrastructure.

Skills

C++ engineering

Low-latency systems

Linux internals

Multithreading

Performance optimisation

Job description

Selby Jennings is recruiting founding C++ engineers for a greenfield systematic trading build in London. You will design and implement ultra-low-latency infrastructure powering a next-generation platform, including market data processing and exchange connectivity.

Collaborate with a hiring manager with expertise in HFT, kernel optimisation, and network infrastructure to shape architecture, tooling, and standards from day one.