Senior Software Engineer | Payments | C# .NET | AWS | Trading Environment | Greenfield Projects[...]

Senior Software Engineer | Payments | C# .NET | AWS | Low-latency Systems | Trading Environment | Greenfield Projects | £120,000 | London (Hybrid)

I’m currently hiring for a leading trading firm that is building out a brand-new, fully greenfield payments platform. This is a rare opportunity to join a high‑performance engineering team at the early stages of a major build, working on low‑latency, high-throughput payment services that sit at the core of the firm’s trading operations.

The business is investing heavily in modernising its payments architecture, with all new development built in C# .NET and deployed on AWS. The focus is on speed, scalability, and resilience—designing systems capable of handling high transaction volumes with minimal latency and maximum reliability. You’ll work closely with traders, quants, and senior engineers to help shape the next generation of the firm’s payments infrastructure.

As a Mid‑Level Software Engineer, you will desi...