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Selby Jennings
London, UNITED KINGDOM
(on-site)
Posted
1 day ago
Selby Jennings
London, UNITED KINGDOM
(on-site)
Job Function
Analyst
Senior Systems Engineer (Greenfield, Ultra High Performance)
The insights provided are generated by AI and may contain inaccuracies. Please independently verify any critical information before relying on it.
Senior Systems Engineer (Greenfield, Ultra High Performance)
The insights provided are generated by AI and may contain inaccuracies. Please independently verify any critical information before relying on it.
Description
Our client is a highly technical team building a greenfield, performance‑critical systems platform from first principles. This is a senior‑level role for engineers who have deep experience designing and optimising latency‑sensitive, high‑throughput production systems and enjoy operating close to the metal.The environment is fast‑moving and adversarial, with a heavy emphasis on correctness, performance, and clear engineering thinking. Engineers are expected to take ownership of substantial parts of the system end‑to‑end.
What you'll be working on:
- Designing and building ultra‑high‑performance systems where latency and throughput matter
- Optimising software with a strong understanding of hardware interaction
- Owning critical components across the full lifecycle: design, implementation, optimisation, and production
- Solving novel, non‑obvious systems problems in a greenfield environment
- Working in a setting with real ambiguity and technical autonomy
What they're looking for:
- 5+ years' experience building and optimising high‑performance production systems
- Strong background in systems engineering, not general application development
- Experience with low‑latency, high‑throughput, or performance‑critical software
- Proficiency in Rust, or strong C/C++ experience with willingness to switch
- Sharp problem‑solving ability and comfort reasoning through complex, unstructured problems
Backgrounds that tend to fit well:
- Engineers from top HFT, trading, or market‑making firms
- Engineers from large‑scale infrastructure teams at top technology companies
- PhDs or candidates with evidence of deep technical work (research, simulations, compilers, systems)
- Competitive programmers or engineers with substantial low‑level side projects
Why this role:
- Greenfield build with meaningful technical ownership
- Work on genuinely hard performance‑driven systems problems
- Small, highly technical team with high engineering standards
- Higher upside: Base salary + guaranteed cash bonus + equity
If you're driven by deep systems work, performance optimisation, and building critical infrastructure from scratch, this is a rare opportunity to do so.
Apply Now!
Job ID: 83485970
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