Senior Ux Engineer/Front-End Engineer

We’re Revolutionizing Energy to Change the WorldAt Octopus Energy, we’re not your typical utility company.We’re a team of passionate people working every day to make energy 100% renewable, accessible, and fair for everyone.We believe technology and innovation are key drivers of change.Our mission is to transform the way the world consumes energy breaking down barriers, simplifying processes, and delivering a more human and transparent service.That’s why our commitment is clear: clean energy should be the norm, not the exception.To achieve this, we combine sustainability with a people-first approach, delivering outstanding service and building a team that shares our vision.To keep growing and transforming the energy sector, we’re looking for talent that wants to make a real difference.We’re looking for a Senior Frontend Engineer to join a very special team within Octopus Energy - the team responsible for building and scaling octopusenergy.We’re looking for someone who thrives on solving real problems for real customers, who’s comfortable owning frontend architecture end-to-end, and who’s flexible enough to jump into different areas of the business as needed.Your focus will be primarily Frontend, but if you have an interest in Backend or a Fullstack mindset, that’s a big plus.We call it the ‘Octopus Effect’From building cutting-edge time-of-use tariffs to gamifying user experiences, we tackle a wide variety of exciting challenges to push the energy revolution forward.Our teams are multi-disciplined and collaborate internationally, meaning you’ll have the support and resources to work with top-tier talent and deliver high-impact global solutions.As a Senior Frontend Engineer in this team, you will:Work closely with Octopus Energy ES and various global teams to develop and integrate new featuresContribute directly to the private area, bill management, saving sessions, customer onboarding optimization, and marketing dashboards, all from a frontend perspectiveThrive in an agile culture: Be open to working across different areas of the business as priorities evolve, and optionally get involved in backend-related work (Python/Django, GraphQL) if you have the interest and skills to do soFluent spoken English is absolutely essential.The team is international, so English will be the language you use on a daily basis.Strong, proven experience as a Senior Frontend Engineer, with a solid grasp of modern frontend architectureDeep expertise in TypeScript and ReactHands-on experience with Next.js, ideally hosted on VercelExperience working with GraphQL as a data layerComfort with CSS-in-JS solutions (experience with PandaCSS is a plus)Solid testing practices using tools like Vitest, React Testing Library, and PlaywrightInterest or experience in Backend development, particularly Python (Django)Familiarity with PostgreSQLA Fullstack mindset: curiosity about the full picture, not just the frontend layerLocation: join us in Barcelona or Valencia (Hybrid)Full-time (40 hours/week)Flexible benefits (meal vouchers, transport, childcare, private health insurance…)Training and professional developmentIf you’d like to know more about how we use your data, you can reach out to us via email at talent@octoenergy.

Thrive in an agile culture: Be open to working across different areas of the business as priorities evolve, and optionally get involved in backend-related work (Python/Django, GraphQL) if you have the interest and skills to do so Fluent spoken English is absolutely essential. The team is international, so English will be the language you use on a daily basis. Strong, proven experience as a Senior Frontend Engineer, with a solid grasp of modern frontend architecture Deep expertise in TypeScript and React Hands-on experience with Next.js, ideally hosted on Vercel Experience working with GraphQL as a data layer Comfort with CSS-in-JS solutions (experience with PandaCSS is a plus) Solid testing practices using tools like Vitest, React Testing Library, and Playwright Interest or experience in Backend development, particularly Python (Django) Familiarity with PostgreSQL A Fullstack mindset: curiosity about the full picture, not just the frontend layer Location: join us in Barcelona or Valencia (Hybrid)

Valencia, España

We’re Revolutionizing Energy to Change the World At Octopus Energy, we’re not your typical utility company. We’re a team of passionate people working every day to make energy 100% renewable, accessible, and fair for everyone. We believe technology and innovation are key drivers of change. Our mission is to transform the way the world consumes energy breaking down barriers, simplifying processes, and delivering a more human and transparent service. That’s why our commitment is clear: clean energy should be the norm, not the exception. To achieve this, we combine sustainability with a people-first approach, delivering outstanding service and building a team that shares our vision. To keep growing and transforming the energy sector, we’re looking for talent that wants to make a real difference.