Backend Developer (m/w/d)

Octopus Energy

4300

Berlin (DE), USA

Posted on: 2026-01-21

Category: energy

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Employment type:

Full time

Experience required:

Intermediate

Salary

Salary not provided

About the company:

We're on a mission to make a big green dent in the universe by building a truly sustainable energy system globally.

That means making power greener, smarter, and more affordable for everyone.

We put customers at the heart of everything we do: with always-fair prices, transparency and outrageous customer service.

We drive system change: with transformative tech to make renewable energy the norm and end global reliance on fossil fuels.

Octopus Energy Group is made up of 10 businesses spanning 6 countries across 3 continents, including: Octopus Energy Retail, Kraken Technologies, Octopus Energy Generation, Kraken Flex, Octopus Electric Vehicles, and the Octopus Centre for Net Zero. More on OEG @ octopusenergy.group

Octopus Energy started in the UK with a bold idea: to become the first truly digital energy supplier.

With cutting-edge technology and amazing people who are passionate about customers and the energy transition, we succeeded and today we are one of the UK’s largest energy providers.

In 2020, we took the next step and expanded to Germany. Since then, we have been supplying customers here with electricity and gas – clean, fair, and transparent. Today, we serve over one million energy customers in Germany. At the same time, we are driving the green transition forward: from easy switching to heat pumps and smart meters to intelligent tariffs that make everyday life easier.

At Octopus Tech in Germany, you get real responsibility and the opportunity to help shape products that make a tangible difference: lower bills, greener living, and customer experiences that truly delight. You work closely with teams from marketing, operations, and data, and you see your work reflected directly in the real world – fast, visible, and meaningful.

If this excites you, we would love to hear from you. 💚

Are you ready for a career with us? We want to ensure you have all the tools and environment you need to unleash your potential. 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!

What You'll Have

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):

Hands-on experience with Python and any web framework - Django is a plus

Experience working with REST APIs - GraphQL is a plus

Experience collaborating on codebases using Git

Ability to communicate in English (participating in meetings and discussions, reading and writing)

Any of the following would be a bonus:

Have knowledge of database management and SQL

Interest in environmental issues and the energy industry

Be able to write technical specifications and maintain clear, concise code documentation

Some knowledge of Datadog and/or Sentry