C++ Low-Latency Developer - Leading HFT Firm | London

We are seeking an exceptional C++ Engineer to join one of the world's most advanced high-frequency trading firms. This is a rare opportunity to work at the intersection of cutting-edge technology and global financial markets, where performance is measured in nanoseconds and innovation drives competitive advantage., * Architect and implement high-performance C++ systems with extreme latency sensitivity.

• Optimise every layer of the stack - from CPU cache and memory allocation to kernel bypass and network I/O.
• Collaborate with traders, quants, and infrastructure engineers to deliver robust, scalable, and lightning-fast trading solutions.
• Profile, benchmark, and tune systems using advanced tooling and custom diagnostics.
• Contribute to the design of proprietary protocols, lock-free data structures, and real-time analytics pipelines.

• Expert-level proficiency in modern C++, with a deep understanding of low-level systems programming.
• Strong grasp of computer architecture, concurrency, and performance engineering.
• Experience with kernel bypass technologies (e.g., DPDK, Solarflare/OpenOnload) and high-performance networking.
• Familiarity with Linux internals, NUMA, CPU affinity, and custom memory management.
• Proven track record of building latency-critical systems in trading, gaming, or telecom environments.
• Bonus: Experience with FPGA acceleration, RDMA, or custom NIC firmware.

• Work with some of the fastest systems and smartest minds in the industry.
• Direct impact on trading performance and strategy execution.
• Access to bespoke infrastructure, bleeding-edge hardware, and proprietary tooling.
• Culture of excellence: flat structure, minimal bureaucracy, and relentless focus on performance.
• Compensation at the top end of the market, with significant upside tied to impact.