Senior Frontend Engineer

• Acting as the flexibility team’s first frontend engineer, establish the team’s frontend capability, lead the team’s frontend technical direction and represent the team to the cross-team community of frontend engineers
• Build and own a diverse range of customer-facing user journeys, enabling customers to onboard, control, and analyse their low carbon tech
• Build and own internal-facing interfaces for stakeholder-collaborators and experimental prototypes
• Interface with established mobile teams by providing WebViews for emerging mobile customer journeys
• Collaborate with our internal design team to integrate our designs into the wider Octopus design system ‘Coral’
• Carry out product discovery by working closely with our Product Manager and stakeholders from across the organisation
• Build highly reusable interfaces that enable rapid response to new opportunities

• 5+ 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
• Desirable: energy domain knowledge, * React (required)
• TypeScript (required)
• Next.js on Vercel (desirable)
• GraphQL w/ Tanstack Query (desirable)
• React Testing Library & vitest and/or msw (desirable)

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., The Flexibility team was established in early 2026, and has been growing throughout the year. The team is focused on greenfield opportunities at the cutting edge of Octopus’ flexibility strategy, and aims to enable rapid response to global flex opportunities., * 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 recently named the UK’s top company to work for, and we ranked in the top ten in the Sunday Times Best Places to Work 2024. Our Group CEO, Greg has recorded a podcast about our culture and how we empower our people. We’ve also been placed in the top 10 companies for senior leadership

• Visit our UK perks hub - Octopus Employee Benefits

If this sounds like you then we’d love to hear from you, tell us what you care about, why Octopus feels right and most importantly, bring us the real you! Applying for jobs can be a bit scary so have a nose through some of our tips first \uD83D\uDE80 P.S. Our process usually takes up to 4 weeks, but we’ll always do our best to flex around what works for you. Along the way, you’ll chat with our recruitment team and your Recruiter will help you throughout different stages. Got any burning questions before then? Drop us a message at talent@octoenergy.com and we’d love to help! Are you ready for a career with us? We want to ensure you have all the tools and environment you need to unleash your potential. Need any specific accommodations? Whether you require specific accommodations or have a unique preference, let us know, and we’ll do what we can to customise your interview process for comfort and maximum magic! Studies have shown that some groups of people, like women, are less likely to apply to a role unless they meet 100% of the job requirements. Whoever you are, if you like one of our jobs, we encourage you to apply as you might just be the candidate we hire. Across Octopus, we’re looking for genuinely decent people who are honest and empathetic. Our people are our strongest asset and the unique skills and perspectives people bring to the team are the driving force of our success. As an equal opportunity employer, we do not discriminate on the basis of any protected attribute. Our commitment is to provide equal opportunities, an inclusive work environment, and fairness for everyone.

Where necessary, we sometimes use AI tools to help with parts of our hiring process, like reviewing applications or assessing responses. We’re lucky to receive a huge amount of interest, so these tools help our recruiters manage that volume, not replace them. Ultimately, every hiring decision (for example, whether to progress your application or not) is always made by a real person in our Talent team. If you’d like to know more about how we use your data, you can reach out to us via email at talent@octoenergy.com. We’re happy to help!