Ultra-Low Latency C++ Engineer | High-Frequency Trading
Salary: £150k-£225k
Total compensation: £250k-500k depending on performance and seniority
A leading quant/systematic trading firm have multiple headcount for Ultra-Low Latency C++ Engineers to join their High-Frequency Trading team in London.
The teams focus is building ultra-low-latency systems operating at global scale.
They're seeking experienced C++ engineers passionate about performance optimization and elegant system design where nanoseconds matter!
What You'll Do:
* Design and optimize latency-critical C++ systems across trading, market data, and infrastructure components
* Performance engineering at every layer: CPU, cache, memory, and network
* Profile, benchmark, and fine-tune system behaviour under real-world conditions
* Collaborate with hardware and FPGA engineers on end-to-end architecture design
* Kernel-level optimization and low-level systems tuning
Required:
* 5+ years developing performance-critical C++ applications (modern C++ standards)
* Strong systems programming and low-level understanding
* Expertise in Linux internals, kernel tuning, and low-level profiling tools
* Genuine curiosity about hardware behaviour, networking, and system optimization
Why Join:
* Work on systems where nanosecond optimizations have measurable impact
* Collaborate with world-class engineers across disciplines (software, FPGA, infrastructure)
* Technology-first culture that values innovation and technical excellence
* Solve challenging problems at the cutting edge of performance engineering