Senior C# Engineer for High-Performance Trading Systems

Company: Selby Jennings
Apply for the Senior C# Engineer for High-Performance Trading Systems
Location: London
Job Description:

Selby Jennings is seeking a talented C# Software Engineer to join a high-performance quantitative trading and technology firm. You will design and develop middleware and backend services powering risk management and trading support systems.

Collaborate with traders, engineers, SREs and infrastructure specialists to deliver scalable, well-tested code and modern full-stack components. You’ll contribute to automation, performance improvements and operational tooling across platforms.

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Posted: July 14th, 2026