Performance C++ Software Engineer (High Frequency Trading)

Performance C++ Software Engineer (High Frequency Trading)

Salary: £150k–£200k

Total Comp: £250k–£500k (based on performance and seniority)

I'm partnered with a quantitative trading firm hiring a Performance C++ Software Engineer to join its high-frequency trading team in London.

The focus is on building and scaling ultra-low-latency systems for global markets.

They’re looking for experienced engineers who care deeply about performance, clean design, and systems where nanoseconds matter.

Responsibilities:

• Build and optimize latency-critical C++ systems across trading, market data, and infrastructure
• Drive performance improvements across CPU, memory, cache, and networking layers
• Profile, benchmark, and tune systems in real-world conditions
• Collaborate with hardware and FPGA engineers on system architecture
• Perform kernel-level optimization and low-level tuning

Requirements:

• Experience developing performance-critical applications in modern C++
• Strong systems programming and low-level expertise
• Deep knowledge of Linux internals, kernel tuning, and profiling tools
• Strong interest in hardware behavior, networking, and optimization

Why Join:

• Work on systems where tiny optimizations have real financial impact
• Collaborate with top engineers across software and hardware
• Engineering-led culture focused on innovation and excellence
• Tackle complex, cutting-edge performance challenges