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)

We’re hiring for a leading trading firm building a brand‑new payments platform. This is a unique chance to join a high‑performance engineering team from the very early stages of a major build, working on low‑latency, high‑throughput payment services at the heart of the firm’s trading operations.

The business is heavily investing 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 Senior Software Engineer, you will design and build new microservices, drive archit...