Backend Developer Hybrid Working in London

London (GB)Octopus Energy Engineering ð – Backend /Full-time /Hybrid 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.

And building innovative technologies that forge a path to a green energy system.

We're united by a shared goal: to drive the global green energy revolution.

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 Backend Engineer to join our Global Backend Team.

The Global Backend Team are the powerhouse behind our mission to build the future of energy tech, working on our new and rapidly growing backend retail codebase used by all Octopus Energy engineering teams around the world.

We embrace flat hierarchies and an open, agile culture that fosters innovation, flexibility, and creativity.

If this sounds exciting, we'd love to chat.

What you'll have We're looking for someone with a general interest in technology and problem-solving; web framework)Domain modelling Graph QLWriting robust and fault-tolerant software Celery and async processing Postgres Plus experience in the following would be a bonus: AWSKubernetes We would prefer someone who can work in our London office but will consider remote candidates.

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.

Where people work with autonomy, alongside a wide range of amazing co-owners, on projects that break new ground.

Our Group CEO, Greg has recorded a podcast about our culture and how we empower our people.

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 ðP.

Along the way, you'll chat with our recruitment team and your Recruiter will help you throughout different stages.

Drop us a message at [email protected] and we'd love to help!

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.

Our people are our strongest asset and the unique skills and perspectives people bring to the team are the driving force of our success.

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 [email protected]. We're happy to help!