Senior Software Developer

You’ll bring significant experience developing data-driven web applications using Microsoft technologies, including C#, Entity Framework Core, SQL Server and Microsoft Azure. Alongside strong cloud and microservices knowledge, you’ll have experience applying modern software design principles, supporting scalable application development and contributing to high-quality engineering practices. Strong communication skills and the ability to support and guide others within a collaborative team environment will also be essential.

In return, you’ll have the opportunity to contribute to digital services that support major renewable energy and social schemes across the UK, applying your expertise to work that is both meaningful and technically engaging. You’ll join a forward-looking environment where innovation, collaboration and development are actively encouraged.

We have a critical purpose to ensure the systems and digital services supporting renewable energy and social schemes remain effective, secure and fit for the future. Join us and help build the applications that support that mission., * Develop, maintain, and support key Ofgem scheme applications.

• Create and maintain technical documentation for business applications.
• Support the Technical Lead in technical decisions and team leadership.
• Mentor junior colleagues to foster their professional development.
• Manage workloads and prioritize tasks as Work Manager when needed.
• Suggest and implement improvements to the development process.
• Collaborate with cross-functional teams to deliver user-centric solutions.
• Ensure adherence to Government Digital Service (GDS) standards.

Key Outputs and Deliverables

• Ensuring that products developed internally and externally are technically and functionally suitable for Ofgem.
• Develop high quality, secure software as part of a team.
• Contribute to, and advancing ideas for continuous improvement.
• Champion best practices in Software Development., We'll assess you against these behaviours during the selection process:
• Making Effective Decisions
• Changing and Improving
• Developing Self and Others

Technical skills

We'll assess you against these technical skills during the selection process:

• You will be asked to conduct a technical test during your interview. Details of the test will be provided at the start of your interview., * UK nationals
• nationals of the Republic of Ireland
• nationals of Commonwealth countries who have the right to work in the UK
• nationals of the EU, Switzerland, Norway, Iceland or Liechtenstein and family members of those nationalities with settled or pre-settled status under the European Union Settlement Scheme (EUSS)
• nationals of the EU, Switzerland, Norway, Iceland or Liechtenstein and family members of those nationalities who have made a valid application for settled or pre-settled status under the European Union Settlement Scheme (EUSS)
• individuals with limited leave to remain or indefinite leave to remain who were eligible to apply for EUSS on or before 31 December 2020
• Turkish nationals, and certain family members of Turkish nationals, who have accrued the right to work in the Civil Service

Do you have experience in Presentation skills?, * Significant demonstrable knowledge and experience in developing data-driven web applications using Microsoft technologies, including proficiency in C# for creating robust and scalable web applications, expertise in using Entity Framework Core for efficient data access and manipulation, strong experience in designing, querying, and managing databases with SQL Server, and proficiency in deploying, managing, and scaling applications on Microsoft Azure. (Lead Criteria)

• Excellent communication and interpersonal skills, with the ability to effectively communicate with team members, stakeholders, and clients. Comfortable deputizing for the Technical Lead when required, with the ability to step into a leadership role, manage teams, and ensure project delivery in the absence of the Technical Lead. (Lead Criteria)
• Knowledge and experience in applying common design patterns to solve software design problems, proficiency in writing and executing unit tests to ensure code quality and reliability, and a strong understanding and application of SOLID principles to create maintainable and scalable software.
• Demonstrable experience with cloud technologies, including designing, developing, and deploying microservices-based architectures, proficiency in using containerization technologies such as Docker and Kubernetes, and broad knowledge of cloud services and platforms with a focus on scalability, security, and performance.
• Ability to guide, mentor, and support junior team members in their professional development, fostering a collaborative and growth-oriented environment within the team., This vacancy is using Success Profiles , and will assess your Behaviours, Experience and Technical skills., Successful candidates must undergo a criminal record check. People working with government assets must complete baseline personnel security standard (opens in new window) checks.

Alongside your salary of £49,452, OFGEM contributes £14,326 towards you being a member of the Civil Service Defined Benefit Pension scheme. Find out what benefits a Civil Service Pension provides. Ofgem can offer you a comprehensive and competitive benefits package which includes; 30 days annual leave after 2 years; Excellent training and development opportunities; The opportunity to join the generous Civil Service pension which also includes a valuable range of benefits; hybrid working (currently 1 day a week in the office but this is kept under review), flexible working hours and family friendly policies. Plus lots of other benefits including clean and bright offices based centrally, engaged networks and teams and an opportunity to contribute to our ambitious and important targets of establishing a Net Zero energy system by 2050. This exciting blend of professional challenge and personal reward identifies career opportunities at Ofgem as something to get excited about.

Technology plays a vital role in supporting the schemes that are helping drive the UK’s transition to greener energy, and at Ofgem, we’re seeking a Senior Software Developer to help build and evolve the applications that underpin this work. Ofgem is Great Britain’s independent energy regulator. We’re at the forefront of change across the sector, driving toward Net Zero whilst protecting consumers, especially vulnerable people. We’re offering a permanent opportunity within our Digital Development team where you’ll play a vital role in the development and upkeep of digital services that support major green energy and social schemes operating across the energy sector. You’ll have the chance to work on meaningful digital products that directly support renewable energy and wider consumer-focused initiatives, helping shape how applications are developed, improved and maintained across the division. Alongside mentoring junior colleagues, you’ll work with a range of talented developers, technical leads and multidisciplinary colleagues within our supportive and highly collaborative environment., At Ofgem, we expect our staff to carry out their roles with honesty, fairness and openness. They should follow the Civil Service code and be free from any influence or bias. We are committed to making sure interests are recognised, declared and managed appropriately so that we can fulfil our duties as an energy regulator. Our Conflicts of Interest policy outlines the types of interests Ofgem staff must declare before onboarding, and the rules they must follow throughout employment so that we can clearly demonstrate that our decisions are not influenced by private interests. Please note, this role is being recruited to in Ofgem. During 2027, it is expected that this role will move department as part of the Warm Homes Plan. The home department or organisation will be confirmed during 2026. The move between departments will be managed in line with the relevant staff transfer regulations. Feedback will only be provided if you attend an interview or assessment., Appointment to the Civil Service is governed by the Civil Service Commission’s Recruitment Principles. You have the right to complain if you feel there has been a breach of these Recruitment Principles. In the first instance, you should raise the matter directly via recruitment@ofgem.gov.uk. If you are not satisfied with the response, you may bring your complaint to the Commission. For further information on bringing a complaint to the Civil Service Commission, please visit their website.   You must create an Indeed account before continuing to the company website to apply