Selby Jennings
Senior Systems Design C++ Engineer
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Senior C++ Engineer
We're working with a leading quantitative investment firm seeking a Senior C++ Engineer to help build and optimise the simulation and research platforms used by researchers and portfolio managers to develop, test, and refine investment models. This is a hybrid role based in London (3 days in/2 days home).
This is not a trading or execution role. The focus is on large-scale systems engineering, performance optimisation, and research infrastructure.
What You'll Do
- Develop and enhance mission-critical C++ platforms
- Optimise system performance, scalability, and reliability
- Work on low-level systems challenges including memory management, concurrency, and I/O optimisation
- Collaborate with highly technical engineers and researchers
- Take ownership of complex, long-lived platform components
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What They're Looking For
- Strong modern C++ expertise
- Background in systems, platform, or infrastructure engineering
- Experience with multithreading, concurrency, and performance optimisation
- Strong CS fundamentals and problem-solving skills
- Ability to operate as a senior individual contributor
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Ideal Backgrounds
The team is particularly interested in engineers from:
- Big Tech
- Infrastructure and platform engineering teams
- Distributed systems or HPC environments
- Database, storage, search, or compute platforms
- Quantitative finance and research-focused technology firms
Why Join?
- Work on business-critical research infrastructure
- Challenging performance and systems engineering problems
- Significant ownership and autonomy
- Strong engineering culture
- Collaboration with world-class researchers and engineers
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