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Software Developer - Ofgem - HEO

Government Digital & Data -

Full-time (Permanent)
National £34,123-£45,831 / London £36,824-£48,561
Published on
19 January 2026
Deadline
2 February 2026

Location

Successful candidates may be based in any of our office locations – Cardiff, Glasgow, or London. We especially welcome applicants from Cardiff and Glasgow.

About the job

Job summary

Help shape the future of energy through impactful digital solutions. Ofgem is looking for a Software Developer to support the delivery of green energy and social schemes, using modern technologies to build services that make a real difference to people's lives.

We’re offering a permanent role where you’ll contribute to the development of applications that support some of the UK’s most vital public services. This is a high-impact opportunity to influence how digital tools are built and delivered, ensuring the systems behind our schemes are efficient, secure and user-focused.

You’ll develop and support innovative applications that contribute to green initiatives, as well as taking part in the technical development of projects and implementing new technologies. There’s plenty of scope for application development, process improvement and shaping the way we work within an agile delivery environment.

This development role will also give you the chance to support junior colleagues, using your expertise to guide and mentor them, and step up and take on management activities for various projects. Collaboration will be at the heart of your approach as you work with other developers, stakeholders and digital experts to create scalable, sustainable solutions that meet Government Digital Service standards.

We’re looking for someone with strong experience in Microsoft-based development, including C#, Entity Framework Core and SQL Server, along with a solid understanding of Azure. You’ll be familiar with applying design patterns, writing and executing unit tests, and working within microservices architectures. Experience with containerization tools such as Docker and Kubernetes, and the ability to communicate effectively across technical and non-technical audiences, will be key to success in this role.

At Ofgem, you’ll be part of a collaborative, inclusive environment where your ideas are valued and your expertise can flourish. We support hybrid working, offer an exceptional benefits package and provide the flexibility and development opportunities that will see you advance your career.

We have a critical purpose to deliver smart, efficient digital services that power the UK’s clean energy future. You will help ensure that essential schemes are built on strong technical foundations, enabling fairer, greener outcomes for consumers and communities across the country.

SC is required for this role. Information and eligibility guidance can be found here: SC - Guidance Pack for Applicants - GOV.UK

Job description

Key Responsibilities

  • Development, maintenance, and support of key Ofgem scheme applications.
  • Technical documentation of key Ofgem business applications.
  • Technical ownership of application requirements.

Key Outputs and Deliverables

  • Ensuring that business applications developed internally and externally are technically and functionally suitable for Ofgem.

Key Stakeholder Relationships

  • To work as part of a team with Developers, Business Analysts, Project Managers, QA Testers, and the IT Infrastructure team to develop and deliver key Ofgem business applications.
  • To work with the IT Infrastructure team to resolve issues with Ofgem business applications.
  • To work with the IT Service Desk to resolve internal and external customer issues with Ofgem business applications.
  • To work with outsourced development partners to transfer technical knowledge of externally developed applications in-house.

Person specification

Essential Criteria

  • (Lead) Essential skills and proven expertise in the following technologies: Microsoft .NET (C#), .NetCore, ASP.Net MVC, API development, Object-Oriented Design, SOLID development techniques and design patterns
  • Knowledge and experience of: Entity Framework, Relational database design, SQL Server Development, SQL Stored procedures, Writing unit and integration tests, Unit Test Frameworks and
    Tools (Nunit, Moq, etc)
  • A good working knowledge of some of the following technologies: Version Control tools and workflows (GIT), CI/CD pipelines within Azure Devops, Build and deployment automation, Cloud Technologies (Azure), Microservices.
  • Demonstrable expertise of collaborative working with: Business Analysts, Automation Engineers, Delivery Managers, Product Managers, Senior Managers, and Business Customers. 

Desirable Criteria

  • Strong work planning, time management, and change management skills across multiple functional groups and departments, and strong skills involving prioritizing and reprioritizing development tasks.


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