Senior Backend Engineer

Octopus Energy

4300

London (GB), United Kingdom

Posted on: 2025-10-28

Category: energy

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Employment type:

Full time

Experience required:

Senior

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 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 earlier this year, we became Britain's largest energy supplier.

Now, we're scaling fast and building the next generation of products to accelerate the green energy transition. From making it effortless to switch to heat pumps, solar and EVs, to launching smart tariffs and creating renewable generation at scale, we're solving some of the most complex challenges in energy with speed, creativity and customer obsession. We're also enabling our global businesses to reach the full capability of what we've achieved in the UK, taking the learnings, products and experiences that customers love here and rolling them out worldwide.

At Octopus Energy Engineering, 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 Senior Backend Engineer - TypeScript, to join our Devices team.

Devices is a cross-functional team within OE Engineering, responsible for developing and maintaining Octopus Energy’s hardware products and features. Our ideal engineer would be an individual who loves to engage with interesting software problems, with an interest in backend/cloud development and the passion to build and shape the future within a collaborative, community-based environment. Engineers in Devices will enjoy collaborating with the wider team, and work with other disciplines to solve problems holistically across multiple products.

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

This is an opportunity to focus on ambitious, high-impact work that's a fundamental part of driving the global shift to clean, smart energy.

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.

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

We would prefer someone who can work in our London office but will consider remote candidates. However, you do need to be able to work in the UK.

Our process usually takes up to 4 weeks, but we’ll always do our best to flex around what works for you. Along the way, you’ll chat with our recruitment team and your Recruiter will help you throughout different stages. Got any burning questions before then? Drop us a message at [email protected] and we’d love to help!

If this sounds like you then we'd 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!

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. Whoever you are, if you like one of our jobs, we encourage you to apply as you might just be the candidate we hire. Across Octopus, we're looking for genuinely decent people who are honest and empathetic. Our people are our strongest asset and the unique skills and perspectives people bring to the team are the driving force of our success. As an equal opportunity employer, we do not discriminate on the basis of any protected attribute. Our commitment is to provide equal opportunities, an inclusive work environment, and fairness for everyone.

What you'll do...

Design, build, and maintain high performance reusable & reliable code

Ensure the best possible performance, reliability, and quality of the KrakenFlex platform

Contribute to the development of new products and features for our in house hardware

Contribute to the software engineering culture here at Octopus Energy

Collaborate regularly with colleagues with many different professional specialities to create innovative solutions that delight our customers and colleagues

Work as part of a team of engineers, regularly seeking feedback and growing your skills as technical professionals

What you'll have...

In depth industry experience in software development & design

Proven experience in either Typescript or Node.Js

Experience with AWS or similar cloud providers, and serverless technologies e.g. AWS Lambda, Kinesis, DynamoDB, API Gateway

A drive to get things done in a collaborative, agile development environment

A proven ability to perform well in a fast-paced environment

Excellent analytical and multitasking skills

It would be great if you had...

Experience developing, securing, or operating cloud scale applications or infrastructure; ideally terraform or cloudformation

Familiarity with container technologies (Docker, Kubernetes etc) and passion for improving the way cloud applications are built

💚 Why else you'll love it here...

💰 Wondering what the salary for this role is? Just ask us! 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. The reason why we don't advertise is because we honestly have a degree of flexibility and would never want salary to be a reason why someone doesn't apply to Octopus - what's more important to us is finding the right octofit!

🎉 Octopus Energy Group 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! We won best company to work for in 2022, on Glassdoor we were voted 50 best places to work in 2022 and our Group CEO, Greg has recorded a podcast about our culture and how we empower our people. We’ve also been placed in the top 10 companies for senior leadership

🎁 Visit our UK perks hub - Octopus Employee Benefits

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