Senior Azure .NET Developer - Contract

Up to £550/day Outside IR35

Mostly Remote (Occasional London travel) - UK based Contractors ONLY

4 Months

We're working with a well-established, high-growth technology business operating in regulated, mission-critical environments.

They are investing heavily in their Azure platform and are looking for 2 x Senior Azure .NET Developers to design and implement secure, scalable API services that sit behind Azure API Management and integrate with PostgreSQL systems.

This is not a standard Back End role. This is architecture-led API engineering in a production-grade environment.

What You'll Be Doing

• Designing and implementing versioned RESTful APIs in .NET 6+
• Building secure services behind Azure API Management (APIM)
• Implementing authentication, authorisation, token validation and throttling
• Designing clean, testable architectures using SOLID principles
• Deploying to AKS/Azure Functions
• Working closely with Product and Engineering stakeholders to shape technical direction

Tech Environment

• C#/.NET 6+
• ASP.NET Core Web API
• Azure API Management
• AKS/Azure Functions
• PostgreSQL
• Azure Monitor/App Insights

This is a senior-level role. You'll be expected to influence design decisions, challenge constructively and build production-ready services.

If you've built secure, scalable API platforms in Azure before - this will be right up your street.