Quantitative Developer – HFT C++ (London)

About the role

Our client is a leading tech‑driven systematic hedge fund seeking a Quantitative Developer to join its high‑frequency trading (HFT) team in London. You will work on latency‑critical systems where every nanosecond matters, collaborating closely with FPGA, hardware and infrastructure engineers.

Key responsibilities

• Design and implement end‑to‑end low‑latency architectures for HFT strategies.
• Perform kernel‑level tuning and network optimisation to minimise latency.
• Develop highly efficient C++ components that run on the performance‑critical stack.
• Profile and debug code on Linux to identify and eliminate bottlenecks.
• Collaborate with cross‑functional teams including FPGA and hardware engineers.

Required profile

• 5+ years of professional experience in performance‑critical C++ development (C++17 or newer).
• Strong understanding of systems programming, memory management and CPU architecture.
• Deep knowledge of Linux internals, kernel parameters and low‑level profiling tools.

Required skills

• C++ (C++17+)
• Linux system programming
• Kernel parameter tuning
• Low‑level profiling and performance optimisation
• Network optimisation for low latency

What we offer

• Competitive salary and generous benefits package.
• Opportunities for professional and personal development.
• Collaborative, creative environment with a relaxed, casual culture.
• Healthy work‑life balance.