Location: London — 3 days per week in the office
We’re looking for an exceptional C++ Low-Latency Technology Lead to join a high-performance technology team within a leading financial services firm.
This is a hands‑on technical leadership role for someone who is passionate about ultra‑low‑latency systems, performance engineering and modern C++ , and who can lead engineers while remaining deeply involved in the architecture and optimisation of critical trading technology.
The Role
You’ll take technical ownership of a highly performance‑sensitive C++ platform, driving improvements across architecture, latency, throughput and reliability.
You’ll work closely with developers, quantitative teams and senior technology stakeholders to solve some of the hardest performance challenges in financial technology.
What You’ll Bring
- Strong expertise in low‑latency / ultra‑low‑latency technology
- Deep understanding of C++ performance optimisation , memory management and CPU architecture
- Proven experience with garbage collection tuning and JVM performance , particularly where C++ and Java systems interact
- Strong knowledge of concurrency, multithreading, lock‑free programming and cache‑aware design
- Experience profiling and eliminating latency at microsecond and sub‑microsecond levels
- Excellent understanding of Linux, networking and systems‑level performance
- Experience leading technically demanding engineering projects and mentoring senior engineers
- Strong communication skills, with the ability to influence architecture and technical strategy
- Experience within trading, capital markets, electronic trading or financial technology
- Experience with market data, order management or execution systems
- Knowledge of kernel/network optimisation, CPU affinity, NUMA and hardware‑level performance
- Experience with performance tooling, benchmarking and latency analysis
- Familiarity with FPGA or hardware acceleration
Why Join?
- 25% annual bonus
- Senior technical leadership position with significant ownership
- Highly performance‑focused engineering environment
- Opportunity to work on genuinely challenging, latency‑critical systems
- London‑based, 3 days per week in the office
If you’re a senior C++ engineer or technology lead who thrives on squeezing every last microsecond out of complex systems, this is an opportunity to make a significant impact at the heart of a high‑performance financial technology environment.
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C++ Team Lead (Low Latency) in London employer: Oliver Bernard
At Oliver Bernard, we pride ourselves on being an exceptional employer, offering a dynamic work culture that fosters innovation and collaboration. Our commitment to employee growth is evident through continuous learning opportunities and the chance to work with cutting-edge technologies in a vibrant location. Join us to make a meaningful impact while enjoying a supportive environment that values your contributions.
