C# .NET Developer Trading Systems

In this C# .NET Developer role, you will help build next‑generation trading systems for a high‑profile algo order management business. You’ll join a small, high‑performing London team with visibility and influence over technology choices. The work centers on high‑throughput, low‑latency software that powers billions in daily trades. You’ll collaborate across teams in a fast‑paced fintech environment and shape the architecture of scalable trading infrastructure.

• salary up to 90,000 GBP + benefits

• Develop desktop applications in C# and server‑side components for trading systems
• Design and implement high‑availability data flows and data warehouses
• Work on messaging for high‑volume transactions and multithreaded applications
• Apply TDD (NUnit) and Agile/Scrum practices in a fast pace environment
• Contribute to application architecture and system design
• Collaborate with cross‑functional teams and learn trading infrastructure (Bloomberg data flows)
• Impact the bottom line through reliable, scalable software solutions

• Computer Science Degree from a top tier university or relevant experience
• 5 years of commercial software development experience
• Commercial experience developing desktop applications in C#
• Good SQL and interest in NoSQL
• Experience with messaging and high‑volume transactions
• Multithreading
• Experience in application architecture and design
• Ideally fintech/trading tech experience
• Experience with high availability data warehouses
• Experience in Agile teams using Scrum
• Test Driven Development (TDD) using NUnit or equivalent

• strong communication
• autonomy
• proactive problem‑solving
• C#
• C++
• SQL