Senior AI Rust Engineer (C#, Platform Migration) in London

Senior AI Rust Engineer (C#, Platform Migration) in London

London Full-Time No working from home possible
Selby Jennings
Senior AI Rust Engineer (C#, Platform Migration)

We're hiring a Senior Software Engineer for a globally active, multi‑asset investment firm to build and scale a high‑throughput, performance‑critical trade management platform.

You'll join a core systems team running distributed, event‑driven infrastructure processing hundreds of millions of events daily. Development is primarily in Rust, with continued work in C#/.NET as the platform is actively migrated. The team places a strong emphasis on production‑grade, AI‑assisted engineering.

What you'll do

  • Build low‑latency, multithreaded Rust services at global scale
  • Maintain and evolve existing C#/.NET services during the migration to Rust
  • Architect and operate resilient, observable distributed systems
  • Use AI coding agents to accelerate delivery, owning quality and correctness end‑to‑end
  • Optimise latency, throughput, memory usage, and cloud cost

What we're looking for

  • 5+ years' experience in performance‑sensitive production environments
  • Strong, hands‑on Rust experience in production (mandatory)
  • Practical use of AI development tools beyond basic code completion
  • Recent experience in C#/.NET
  • Distributed systems, async/concurrency, and Cloud experience (ideally AWS)

Nice to have

  • Exposure to financial systems or trading workflows

Feel free to apply for more information.
Selby Jennings

Contact Details:

Selby Jennings Recruitment Team