Software Engineer

Senior Software Developer – Trading Systems (Fully Remote, UK)

Location: London (Fully Remote with Optional Hot Desking)

Salary: Up to £100,000 + Benefits

Industry: Trading / FinTech

The Role

We’re seeking a Senior Software Developer to join a small, collaborative team building and maintaining mission-critical trading systems within a modern microservice architecture. You’ll replace a long-standing contractor and work alongside two other developers, a hands-on manager, and dedicated QA support.

This is a highly impactful role offering full autonomy, complex technical challenges, and the ability to work fully remotely.

What You’ll Do

• Develop and maintain trading applications built on microservices.
• Work extensively with queuing , including synchronous and asynchronous communication patterns.
• Contribute to system architecture, threading, and advanced async design.
• Build across C#.NET , .NET Core , REST APIs , RabbitMQ , Azure Service Bus , SQL Server , WPF , and some React .
• Apply strong engineering practices: unit/integration testing , DDD , TDD .
• Collaborate closely within a small team focused on reliability and performance.

What You’ll Bring

• Strong background in microservice architecture and messaging/queuing systems .
• Deep understanding of concurrency , threading , and async design.
• Expertise in C#.NET , .NET Core , and legacy .NET frameworks.
• Experience with RESTful APIs , SQL Server , RabbitMQ , Azure Service Bus , and UI technologies.
• Exposure to Azure or cloud platforms is a plus.
• Experience in critical systems; finance experience beneficial but not essential.
• Collaborative, open-minded, and a good fit for a relaxed, small-team culture.

Why Join?

• Up to £100,000 salary
• Fully remote working with London office access
• Private healthcare
• Cycle-to-work scheme
• Wellness budget
• Electric vehicle scheme
• Up to 30 days' holiday with tenure
• Supportive, friendly, and low-ego engineering culture

If you are interested please email your cv to megan.seymour@stottandmay.com for immediate consideration.