Backend Developer
September 19, 2025
What will you be doing?
- Octopus Energy Engineering is responsible for the sites, services, and tariffs that are used by the millions of Octopus Energy customers worldwide. From building the latest, cutting-edge time-of-use tariffs, to helping customers actually enjoy tasks like providing meter readings through our wheel of fortune - and everything in between.
- You’ll find a wide variety of challenges in the work we do as we help push the energy revolution forward. Our teams are multi-disciplined and collaborate between countries, meaning you have what you need to get the right people together and build the next great thing.
- Octopus Energy is growing rapidly, and the Octopus Energy Engineering team is at the forefront of this expansion. We are looking for a Backend Developer who will work closely with Octopus Energy UK and various teams, focusing on the development and integration of new features for the website and mobile app.
- The role involves working on different modules, including the private area, bill management and saving sessions, contributing to customer onboarding optimization and the implementation of marketing projects through dashboards and the personal area.
- The team is driven by the mission of creating a direct impact on customers in everything it does, meaning priorities do sometimes change, but the pace and resulting feedback cycle is satisfyingly quick, and consistently so too.
- We embrace flat hierarchies and an open, agile culture that fosters innovation, flexibility, and creativity.
- We don’t hang our personalities up with our coats and nor should you. At Octopus, we hire great people who get stuff done, all whilst being themselves.
What you'll need
- We're looking for someone with a general interest in technology and problem-solving; someone diligent and thoughtful. It would be helpful to have experience in the following (in rough priority order):
- Python
- Django (or equiv. web framework)
- Domain modelling
- GraphQL and REST APIs
- Writing robust and fault-tolerant software
- Celery and async processing
- Postgres
- Plus experience in the following would be a bonus:
- AWS
- Terraform, Packer, Consul
- React and Next.js
What else you'll love about us
- Octopus Energy 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!
- Flexible working environment - genuine work life balance here, we treat you as a human, and do our best to make work and life merge smoothly together.
- Equity Options Scheme - you own your own part of the business, share options in the whole Octopus Energy Group so we all work together towards success.
- Office culture - have a certain tech requirement? We’ll do our best to get it. Weekly on a Friday we all get together (this happens virtually too) for company updates and drinks - we call it Family Dinner.
- Your development is important - we support and help with development including internal and external courses, learning, study support etc, all bespoke to you.