Software Engineer, C# ​/ Unity Developer, Cloud Engineer - Software

Base pay range

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

Location: London (Fully Remote with Optional Hot Desking)

Salary: Up to £100,000 + Benefits

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.

• 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.

• 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.

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

If you are interested  to  for immediate consideration.

• Mid‑Senior level

• Full‑time

• Information Technology

• Technology, Information and Media