C++ Software Engineer

Company: Selby Jennings
Apply for the C++ Software Engineer
Location: London
Job Description:

A leading quantitative trading and market‑making firm is seeking a Senior C++ Engineer to join a high‑performance technology team responsible for building the systems that underpin global electronic trading operations.

This is an opportunity to work on performance‑critical software where engineering is at the centre of the business. You’ll be developing low‑latency trading components, execution systems and core infrastructure that directly influence trading performance and business outcomes, with engineers given significant ownership and autonomy.

What You’ll Be Doing

  • Designing and developing high‑performance C++ applications
  • Building low‑latency trading infrastructure and execution systems
  • Optimising systems for throughput, determinism and reliability
  • Working closely with traders, quantitative researchers and fellow engineers
  • Contributing to architecture, system design and technical direction
  • Solving complex engineering challenges in a real‑time environment

What They’re Looking For

  • Strong commercial experience with modern C++ (C++17/20/23 preferred)
  • Background in low‑latency, distributed or high‑performance systems
  • Excellent knowledge of Linux systems programming
  • Strong understanding of algorithms, data structures and software design
  • Experience working on real‑time or mission‑critical applications
  • Financial markets experience is a plus, but exceptional engineers from other highly performant environments will also be considered

Why Consider It?

  • Work on software that directly impacts trading performance
  • Join a highly technical, engineering‑led environment
  • Significant ownership and autonomy from day one
  • Collaborative team with close exposure to decision makers
  • Competitive compensation structure with strong earning potential
  • Opportunity to work on some of the most challenging low‑latency problems in the industry
  • Flat organisational structure where good ideas can have immediate impact

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Posted: July 11th, 2026