Full Stack Developer

Full Stack Developer Application Deadline: 6 December 2026 Department: Technology Employment Type: Permanent - Full Time Location: Chippenham, Wiltshire Compensation: £35,000 - £45,000 / year Description No day will be the same - here are some of the highlights Ready to put your Full Stack development experience to work and help power a cleaner future? Join our IT & Digital department as a Full Stack Developer, working in either our Services or B2C development team to build applications that support our customers and our business. You’ll spend most of your week building new features, working across the stack from C# backend services to Next.js and React Native applications. Our teams own what they build, so you’ll also deploy and monitor your applications in Azure, seeing your work through to production. This is a mid-level role for a developer with experience delivering features in a development team. You’ll bring practical full-stack skills, take ownership of your work and contribute to technical decisions, while continuing to develop your expertise with support from your Team Lead and colleagues. Responsibilities: Feature Development: Take ownership of new features across our web, mobile and backend applications, from refinement through to production, writing clean, well-tested code in C#/.NET, TypeScript, Next.js and React Native. Cloud & Deployment: Deploy, run and monitor your applications in Azure, troubleshooting your changes and seeing your work through to production. Development Tooling: Use Azure DevOps for boards, repos and CI/CD pipelines. Shaping Solutions: Work with your product manager to understand requirements, shape practical solutions and contribute to technical decisions. Quality: Collaborate with our automation tester to make quality part of everything we ship. Teamwork & Learning: Contribute to code reviews, pairing and Scrum ceremonies, sharing your knowledge and ideas while learning from others. AI & Modern Tools: Use AI tools thoughtfully to work smarter, and share what you learn with the team. Our Teams Our three development teams each focus on a different part of the business. You’ll join either Services or B2C, working in a small, close-knit Scrum team where we share knowledge openly and support each other to grow. Services: The systems and integrations behind our solar installations and energy services, supporting the customer journey from sales and quoting through to onboarding and ongoing maintenance. B2C: Our direct-to-consumer energy supply and Feed-in Tariff (FIT) platforms for households. B2B: Energy supply and Feed-in Tariff (FIT) platforms for businesses. Your team will include 3–4 software developers, including you, a Lead Developer and an Automation Tester. Each team works closely with a dedicated product manager, giving you plenty of opportunities to collaborate and learn. What you'll need to succeed You’ll bring practical experience building applications with C#/.NET, JavaScript, TypeScript and React and/or Next.js. You’ll be comfortable delivering features independently, writing clean, well-tested code and thinking about how your changes work from end to end, with the curiosity to keep learning. You’ll communicate clearly, collaborate well and bring hands-on experience using AI tools in your development workflow. We use Claude, GitHub Copilot and Azure AI Foundry, but experience with other AI tools and platforms is equally welcome. Don’t tick every box? Please apply anyway. We care more about your potential and attitude than a perfect match to a list. Essentials: Practical experience developing backend services with C# and .NET Experience developing applications with JavaScript and TypeScript Experience building features with React and/or Next.js Hands-on experience using AI tools in your development workflow, whether Claude, GitHub Copilot, Azure AI Foundry or other AI tools and platforms Curiosity, the ability to learn quickly and an interest in how things work from end to end Good communication skills and a collaborative approach Desirables: Experience with Azure or another cloud platform React Native or mobile app development experience Experience with CI/CD and modern development practices, including automated testing, code review and trunk-based development Experience with Azure DevOps or similar development tooling Experience working in an Agile or Scrum team Experience with databases such as SQL Server and/or Cosmos DB, or equivalent SQL/NoSQL technologies Knowledge of the energy sector – not required, as we’ll help you learn Our Tech Stack Backend: .NET / C# Frontend: Next.js, React, TypeScript Mobile: React Native Cloud: Azure – Functions, App Service, Service Bus, Application Insights and more Data: SQL Server, Cosmos DB, Azure Table Storage, Databricks Tooling: Azure DevOps for work item management, repos and pipelines AI: Claude, GitHub Copilot, Azure AI Foundry What success looks like You’ll be supported throughout, with clear goals along the way. The first 3 months: You’ve settled into the team and understand how we work You’ve set up your environment and are regularly shipping features to production You’re getting to grips with our stack, codebase and Azure DevOps pipelines You’re contributing to code reviews and Scrum ceremonies By 6 months: You’re delivering features independently You’re confidently deploying, monitoring and troubleshooting your own changes in Azure You’re spotting improvements, sharing ideas and contributing to technical decisions By 12 months: You’re a reliable, confident contributor to the team’s delivery You take ownership of features from refinement through to production You’re helping others, sharing knowledge and making good use of AI and modern tooling You have a clear development plan with your Team Lead for your next steps Hybrid working explained: When and where you’ll be in the office Our office is based in Chippenham, Wiltshire. For this role, we're looking for candidates who can come in to our Chippenham office, once a week. We offer both formal and informal flexible working options. Full-time hours are 37.5 per week, Monday to Friday. The office is fully accessible, allowing everyone to participate fully in their working lives regardless of any mobility challenges. We promote work-life balance and flexibility through hybrid working, which combines both remote and office work. Benefits you can rely on Great allowances for hybrid working: 🏡 £500 work from home allowance - an annual allowance paid monthly alongside your salary to support with working from home costs. 🚆 £500 travel allowance - an annual allowance paid monthly alongside your salary to support with travelling to work costs. 📖 £500 annual development allowance: To spend on your chosen development area, whether that’s in your current role, or future roles. 🎁 8% annual bonus: company-wide bonus scheme designed to reward collective teamwork and delivery of results across the whole business. 🌞 Holiday: 25 days annual leave, a day off for your birthday, additional days leave for long service, plus bank holidays. You’ll also have the option to buy additional leave, allowing for a better work-life balance. 💸 Ethical Pension with Aviva: Good Energy offers an ethical pension plan provided by Aviva, with employer-matched contributions up to 7.5% of your base salary.