​Senior Full-Stack Software Engineer | 6-Month Contract Rolling

We’re hiring Senior Full-stack Software Engineers to join a fast-paced Web and Mobile Squad within the retail division of a major UK energy provider. You’ll work on customer-facing digital products that support millions of users.

• 6-month contract (strong chance of extension)

• Inside IR35

• UK-based, remote-first with occasional meetups

As part of a cross-functional squad, you’ll contribute to the design, development, and optimisation of key digital customer journeys. You’ll build and enhance web and mobile experiences using React and TypeScript, while working with Node.js and GraphQL services to deliver performant, scalable features. The work spans UI performance, API integration, and improving how customers interact with energy products and services.

What We’re Looking For

• Strong experience with React (v16+) and TypeScript

• Experience building APIs or services using Node.js

• Hands-on experience with GraphQL (consuming and/or building APIs)

• Solid understanding of modern React patterns (hooks, functional components, state management)

• Experience building customer-facing web or mobile applications

• A proactive approach to code quality, testing, and team collaboration

• Experience with React Native or native mobile development is a plus

You’ll be part of an agile, cross-functional team working closely with engineers, designers, and product owners.