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Full Stack Software Engineer

Octopus Energy - London, United Kingdom - In-office - posted 2026-10-07

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Octopus Electric Vehicles is revolutionizing the electric car leasing industry. We're seeking a Senior Full Stack Software Engineer to join our product and engineering team, building the systems that power our platform. You'll work within a dedicated cross-functional team on key products for customers and internal teams. Your responsibilities will include: • Building APIs and integrating with internal and third-party services to optimize and automate processes • Developing frontend applications that create exceptional user experiences • Creating performant systems that work consistently across modern browsers and devices • Writing maintainable, robust code with a focus on long-term sustainability • Contributing ideas, sharing knowledge, mentoring teammates, and raising the overall technical bar Our tech stack includes Python with GraphQL, React with Next.js, PostgreSQL and NoSQL databases, running on AWS. Octopus Electric Vehicles launched in 2018 to make switching to electric vehicles seamless. We're part of the Octopus Energy Group, an innovative energy supplier transforming multiple industries. The company was named the Sunday Times best company to work for in 2024, ranked 6th in Tempo's top 100 startups to work for in 2025, and voted 50th best place to work on Glassdoor in 2022. We offer a unique culture where people learn, decide, and build quickly with autonomy. The company is dog-friendly and provides perks designed around what employees actually value. We use AI to assess applications fairly and encourage candidates to use AI tools in their preparation. REQUIREMENTS: • Expertise in Python and React • Proficiency working with multiple data sources and designing expressive APIs using GraphQL • Experience working with design systems and component libraries • Excellent understanding of fundamental coding principles and best practices, with proven ability to create robust, scalable, maintainable software • Proven experience collaborating within teams and across disciplines • Track record of taking ownership of feature development from inception through delivery BONUS QUALIFICATIONS: • Proficiency in TypeScript and Next.js • Working knowledge of AWS and infrastructure as code (IaC) practices • Experience with event-driven architecture/systems (EDA) • Production experience with AI tech and tooling

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