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Octopus Energy is Britain's largest energy supplier and part of a global energy transition collective of 10 businesses across 4 continents. The company combines world-class technology with a mission to make energy fair, clean, and simple while driving the renewable energy transition.
You'll join the Onboarding team at Octopus Tech, which owns the main entry points for consumers, focusing on improving customer journeys and launching new projects that impact thousands of customers daily. The team operates in a fast-moving, open environment with a strong emphasis on user experience and human-centered design. You'll work collaboratively with developers, marketing, operations, and data teams, seeing the real-world impact of your work quickly.
The role offers genuine ownership and variety. You'll develop scalable, performant websites that handle high traffic, build accessible experiences, and own the full development cycle from requirements gathering through deployment and monitoring. The company embraces flat hierarchies, an agile culture, and values authenticity—you'll work alongside people who are genuinely committed to the green energy revolution.
Octopus Energy was named the UK's top company to work for in 2025 and ranked in the top ten in the Sunday Times Best Places to Work 2026. The culture emphasizes learning, autonomy, and quick decision-making.
REQUIREMENTS:
- 3+ years of experience with the tech stack (React required; TypeScript, Next.js on Vercel, GraphQL with Apollo, React Testing Library, and Playwright are desirable)
- Experience solving open-ended problems and developing strong solutions without strict guidelines
- Confidence owning the full development cycle (requirements gathering, technical proposals, execution, deployment, monitoring)
- Ability to tackle large-scale tasks independently
- Empathetic approach to delegating and collaborating with others
- Experience building websites that meet strong accessibility guidelines
- Track record building scalable, performant sites handling high traffic
