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

- **Company:** Selby Jennings
- **Location:** London, UK
- **Contract:** Permanent contract
- **Skills:** C++ (Programming Language), Data Structures, Memory Management, Firmware, Field-Programmable Gate Array (FPGA), High-Frequency Trading, Linux Kernel, Remote Direct Memory Access, System Programming, Concurrency, Low Latency, C++14
- **Published:** May 20, 2026
- **Apply:** https://find.jobs/jobs-near-me/c-low-latency-developer-leading-hft-firm-london-london/2778269166-2/

## About the Role

* 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.

## Description

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.


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