C++ Software Engineer
G-Research · London, United Kingdom · full time · On site · February 16, 2026
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We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity.
From our London HQ, we unite world-class researchers and engineers in an environment that values deep exploration and methodical execution - because the best ideas take time to evolve. Together we’re building a world-class platform to amplify our teams’ most powerful ideas.
As part of our engineering team, you’ll shape the platforms and tools that drive high-impact research - designing systems that scale, accelerate discovery and support innovation across the firm.
Take the next step in your career.
The role
The Colo Engineering and Performance team owns system-level application performance in our colos. It provides developers with crucial insight and recommendations for improvement, as well as the information required to determine the most effective hardware and operating system configurations for each site.
Key responsibilities of the role include:
- Developing high-performance, low-latency systems
- Collaborating closely with quantitative researchers and developers
- Designing and optimising rapid trading systems end-to-end
- Applying low-level systems programming and optimisation using languages such as C, C++ or similar
- Financial market knowledge is not required
Why join us?
- Highly competitive compensation plus annual discretionary bonus
- Lunch provided (via Just Eat for Business) and dedicated barista bar
- 35 days’ annual leave
- 9% company pension contributions
- Informal dress code and excellent work/life balance
- Comprehensive healthcare and life assurance
- Cycle-to-work scheme
- Monthly company events
G-Research is committed to cultivating and preserving an inclusive work environment. We are an ideas-driven business and we place great value on diversity of experience and opinions.
We want to ensure that applicants receive a recruitment experience that enables them to perform at their best. If you have a disability or special need that requires accommodation please let us know in the relevant section
Who are we looking for?
The ideal candidate will have the following skills and experience:
- Expertise in low-level systems programming and optimisation for extremely low-latency, high-throughput network applications
- Ability to analyse and improve application performance using hardware counters and other profiling tools
- Deep understanding of modern computer architecture including cache hierarchies of modern processors.
- Experience with fast-packet processing in user space and familiarity with kernel-bypass techniques such as Solarflare OpenOnload, TPCDirect, ef_vi, InfiniBand verbs, DPDK or similar
- Experience optimising performance in managed runtime languages such as C# is desirable
- Employer
- G-Research
- Location
- London, United Kingdom · On site
- Contract
- full time