Experienced C++ Engineer - Linux Kernel & Ultra-Low Latency Trading
A world-class quantitative trading firm is seeking exceptional C++ and Linux performance engineers to work on the infrastructure underpinning some of the fastest trading systems in the industry.
This is an environment where performance is measured in nanoseconds, not milliseconds. Every cache miss, scheduler decision, memory allocation, kernel interrupt, and network hop is scrutinised. You'll work at the intersection of C++, Linux internals, CPU architecture, and hardware, extracting deterministic performance from modern x86 systems.
What You'll Own
- Ultra-low-latency C++ trading and market data infrastructure
- Linux kernel, scheduler, and network stack optimisation
- CPU, cache, NUMA, and memory performance analysis
- Low-level profiling using perf, eBPF, ftrace, and hardware counters
- Kernel tuning, CPU isolation, IRQ affinity, and latency reduction
- Cross-stack optimisation alongside FPGA, hardware, and infrastructure specialists
What They're Looking For
- 3-12 years of modern C++ (C++17/20)
- Strong Linux systems programming expertise
- Deep understanding of Linux internals and performance engineering
- Experience debugging bottlenecks across kernel, CPU, memory, and hardware layers
- Knowledge of CPU architecture, networking, and low-latency systems
- Elite academic credentials: First-Class degree (or equivalent GPA) from a top university in Computer Science, Mathematics, Physics, Engineering, or a related STEM field
Why Join?
This role is about understanding how machines actually behave under load and removing latency at every layer of the stack. You'll profile production systems, tune kernels, analyse CPU behaviour, and optimise performance where microseconds are already too slow.
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