Software Engineer (C#/.NET)

November 4, 2026

Hybrid

Senior

London Area, United Kingdom

Description

A leading FinTech firm in London is looking for a Software Engineer to join its growing technology team in a fast-paced, high-performance trading environment. The role involves building modern, scalable applications, backend services, APIs and microservices with C#/.NET, as well as real-time trading systems and analytics platforms. This is a hybrid, full-time position with base salary up to £150k plus an industry-leading bonus.

Responsibilities

Building modern, scalable applications using C# and .NET for business-critical trading and operational platforms
Designing and developing robust backend services, APIs and microservices using C#/.NET
Building real-time trading systems, analytics platforms and data-driven applications used by traders, quantitative researchers and engineering teams
Working with databases and distributed systems to develop reliable, high-performance technology solutions
Taking ownership of features from concept through to deployment in a collaborative, fast-paced engineering environment
Collaborating with cross-functional teams including traders, quantitative researchers and engineers
Contributing to the design and development of technology supporting trading and investment activities