Frontend Engineer

We're making energy fair, clean, and simple for all using technology. Octopus Energy started with a bold idea: to build Britain’s first truly digital energy supplier. By combining world-class tech with brilliant humans who care deeply about customers and driving the renewable energy transition, we made it happen and in 2025, we became Britain’s largest energy supplier. Octopus Energy Group is a global energy transition collective. 10 businesses working across 4 continents to tackle energy transformation at nearly every front. And we constantly push to make energy better. Tirelessly campaigning for fair protections for customers. And building innovative technologies that forge a path to a green energy system. We’re made up of 10,000+ authentic, committed people working around the world on stuff you'd never expect. We're united by a shared goal: to drive the global green energy revolution. Read our Spotlight series to meet some of the team. About the role At Octopus Tech, you’ll have real ownership, variety, and the chance to shape products that make a tangible difference in people’s lives - lowering bills, enabling greener living, and delivering experiences customers genuinely love. You’ll work side by side with teams across marketing, operations, and data, and see the impact of your work in the real world, fast. We are looking for a Frontend Engineer to join our Onboarding team. The Onboarding team owns the main entry points of consumers for OEGB, focusing on improving the current journeys and working in new projects impacting thousands of customers everyday. They work in a very open and fast-moving environment, focusing on the user experience with a strong human touch to everything they do. Onboarding is also a very collaborative team, working together with other developers and teams, strengthening our tech stack and influencing which paths OE takes in its tech journey. We embrace flat hierarchies and an open, agile culture that fosters innovation, flexibility, and creativity. We don’t hang our personalities up with our coats and nor should you. At Octopus, we hire great people who get stuff done, all whilst being themselves. If this sounds exciting, we’d love to chat. What you'll have • 3+ years of experience with our stack, listed below • Experience taking problems, rather than strict guidelines, and developing strong solutions • Confidence owning the development cycle (request, requirements gathering, technical proposal, technical execution, deployment and monitoring.) • Confidence tackling large-scale tasks individually • An empathetic approach to delegating work and collaborating with others • The ability to develop websites that meet strong accessibility guidelines • Experience building scalable, performant sites that handle high levels of traffic well Our stack • React • TypeScript (desirable) • Next.js on Vercel (desirable) • GraphQL w/ Apollo (desirable) • React Testing Library & Playwright Why else you'll love it here • Wondering what the salary for this role is? Just ask us! On a call with one of our recruiters it's something we always cover as we genuinely want to match your experience with the correct salary. The reason why we don't advertise is because we honestly have a degree of flexibility and would never want salary to be a reason why someone doesn't apply to Octopus - what's more important to us is finding the right octofit! • Octopus Energy Group is a unique culture . An organisation where people learn, decide, and build quicker. Where people work with autonomy, alongside a wide range of amazing co-owners, on projects that break new ground. We want your hard work to be rewarded with perks you actually care about! We were named the UK's top company to work for in 2025 , and we ranked i