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Backend Developer
Salary context from live listings
Observed pay for backend engineer jobs in the united kingdom
Among 8 openings that publish compensation, the median stated annual range is $120K–$154K USD. This uses observed listing data across 66 live jobs, never an estimated salary.
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Reach the decision-makerAbout the role
We are looking for a **Backend Developer** to take ownership of the backend architecture, APIs, and core services that power both our existing web platforms and a new, modern, real\-time operational system.
This is a hands\-on role focused on developing scalable backend solutions, maintaining and enhancing our existing ASP.NET applications, and building cloud\-based services using ASP.NET Core and Microsoft Azure. You will work closely with our developers to deliver modern, API\-driven applications while helping to modernise our technology stack and improve the performance, security, and reliability of our systems.
You can find out more about us here: https://nationalgas.org.uk/
**WHAT YOU’LL DO**
* Maintain, enhance, and support existing ASP.NET\-based websites hosted on IIS * Build and extend backend services and REST APIs using ASP.NET Core / .NET * Implement real\-time features using SignalR. * Support and integrate WebRTC audio\-only calling functionality. * Design, optimise, and maintain SQL Server and MariaDB databases. * Build features involving mapping, GPS, geolocation, and geofencing. * Collaborate with product, engineering, and DevOps teams on system architecture. * Write clean, testable, and maintainable code across the full stack. * Contribute to performance, scalability, and security improvements. * Participate in code reviews, technical planning, and system design discussions
**REQUIRED SKILLS AND EXPERTISE**
* Strong experience with ASP.NET Core / .NET * Experience maintaining or building ASP.NET websites * Strong background building RESTful APIs * Solid knowledge of SQL Server or MariaDB * Experience with Entity Framework Core and/or Dapper * Understanding of async programming, concurrency, and performance * Experience implementing authentication and authorisation (JWT, OAuth2\)
**DevOps \& Cloud**
* Experience with CI/CD pipelines (Azure DevOps, GitHub Actions) * Comfortable using Docker for development and deployment * Exposure to Microsoft Azure (App Services, SignalR Service, Storage) * Familiarity with logging and monitoring tools (Application Insights, Serilog) * Comfortable working with IIS and Windows\-based hosting environments
**WHAT WE OFFER**
* Ownership of both existing platforms and new system builds * Opportunity to modernise and shape our long\-term tech stack * Engineering\-led environment with real technical ownership * Clear career progression and skills development
Pay: £40,000\.00 per year
Benefits:
* Company pension
Work Location: In person
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