Senior Rust Engineer - Low-Level Systems

I'm working with a leading financial technology organisation building ultra-low latency systems at scale, and we're looking for a Senior Rust Engineer with a strong grounding in low-level systems programming.

This is an opportunity to join a high-calibre team of engineers pushing the boundaries of performance and reliability in a demanding, mission-critical environment. The systems you'll help build operate in the microsecond range and demand deep OS, networking, and concurrency knowledge.

• Designing and developing low-latency, high-throughput microservices in Rust

• Building and refining core components of a proprietary event-driven framework

• Working closely with architects and infrastructure engineers to optimise performance across the stack

• Developing systems with a focus on resilience, fault-tolerance, and scalability

• Driving performance improvements with hardware-aware optimisations and kernel-bypass techniques

• Deep understanding of systems-level programming (Rust, C, C++)

• Experience with manual memory management, concurrency, and multithreading

• Familiarity with Linux internals, system calls, and networking (e.g., epoll, io_uring)

• Bonus points for experience with:

  • Kernel bypass (Solarflare, DPDK)

  • Building custom allocators or working in no_std environments

  • Prior work in trading, real-time systems, or performance-sensitive environments (previous finance experience not crucial)

Rust, Linux, GitHub, CI/CD (CircleCI), Docker, TCP/UDP, Playwright (some teams), OpenOnload, AWS

• Base salary up to ~£140,000 depending on experience

• Hybrid working: 2-3 days/week in a London office

• Excellent benefits: pension, medical, 27+ days leave, bonus

This is a career-defining opportunity to work on some of the most cutting-edge low-latency systems in the industry. You'll be part of a team that values technical depth, innovation, and clean engineering, all while working on systems where every microsecond counts.

McGregor Boyall is an equal opportunity employer and do not discriminate on any grounds.