Software Developer

Ofgem; City of Westminster; On-site; GBP 40,000 - 60,000; Full time

Job summary

A UK regulatory body is looking for a Software Developer to support green energy and social schemes. This permanent position involves the development of impactful applications using Microsoft technologies, influencing public services positively. The candidate will also mentor junior developers, partake in innovative projects, and contribute to agile teams to enhance digital solutions. Strong experience in .NET, SQL Server, and collaborative environments is essential for success in this high-impact role.

Qualifications

• Experience in Microsoft-based development, including C# and SQL Server.
• Familiarity with design patterns and writing unit tests.
• Ability to work within microservices architectures.

Responsibilities

• Develop and support key applications for Ofgem.
• Create technical documentation for business applications.
• Take ownership of application requirements.

Skills

Microsoft .NET (C#)

.NetCore

MVC

API development

Object‑Oriented Design

SOLID development techniques

Entity Framework

Relational database design

SQL Server Development

Writing unit and integration tests

Version Control tools (GIT)

CI/CD pipelines within Azure Devops

Cloud Technologies (Azure)

Microservices

Docker

Kubernetes

Job description

Overview

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.

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.

Essential Skills and Proven Expertise

• Microsoft .NET (C#), .NetCore, MVC, API development, Object‑Oriented Design, SOLID development techniques and design patterns.

Knowledge and Experience

• Entity Framework, Relational database design, SQL Server Development, SQL Stored procedures, Writing unit and integration tests, Unit Test Frameworks and Tools (Nunit, Moq, etc).

Current Working Knowledge

• Version Control tools and workflows (GIT), CI/CD pipelines within Azure Devops, Build and deployment automation, Cloud Technologies (Azure), Microservices.

Collaborative Working

• 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.

Working Environment

Working environment, 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.

SC is required for this role.