C++ Software Engineer

Barlowe LLP; Greater London; On-site; GBP 70,000 - 100,000; Full time

Benefits offered by this job

Highly competitive compensation

Annual discretionary bonus

35 days’ annual leave

9% company pension contributions

Comprehensive healthcare

Cycle-to-work scheme

Monthly company events

Job summary

Barlowe LLP in London is seeking a skilled engineer to develop high-performance, low-latency systems for quantitative finance. You will collaborate closely with researchers to design and optimise trading systems, requiring expertise in low-level systems programming and modern computer architecture.

The ideal candidate will have experience with performance optimisation and kernel-bypass techniques. This role offers highly competitive compensation, generous annual leave, and a flexible working environment.

Qualifications

• Expertise in low-level systems programming and optimisation for low-latency, high-throughput applications.
• Deep understanding of processor cache hierarchies.
• Experience with fast-packet processing and kernel-bypass techniques.

Responsibilities

• Develop high-performance, low-latency systems.
• Collaborate closely with quantitative researchers and developers.
• Design and optimise rapid trading systems end-to-end.

Skills

Low-level systems programming

Performance optimisation

C/C++

Modern computer architecture

Kernel-bypass techniques

Tools

Profiling tools

DPDK

Job description

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.

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

• Develop high‑performance, low‑latency systems.
• Collaborate closely with quantitative researchers and developers.
• Design and optimise rapid trading systems end‑to‑end.
• Apply low‑level systems programming and optimisation using languages such as C, C++ or similar.
• Analyse and improve application performance using hardware counters and profiling tools.

Qualifications

• Expertise in low‑level systems programming and optimisation for extremely low‑latency, high‑throughput network applications.
• 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.
• Financial market knowledge is not required.

Benefits

• 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.

EEO & Inclusion

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. If you have a disability or special need that requires accommodation, please let us know in the relevant section.

At G‑Research, we are passionate about the intersection of finance, technology, and the future. We offer a dynamic, flexible and highly stimulating culture where world‑beating ideas are cultivated and rewarded. We are proud to employ some of the best people in their field and to nurture their talent in our collaborative working environment.