Octopus Energy Group

Senior Frontend Engineer (m/w/d)

Remote, Germany remote Mid Salary not listed
remote Mid level Technology & IT Curated
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About the role

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 energy transition forward: from easy switching to heat pumps and smart meters to intelligent tariffs that make everyday life easier.

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.

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

What You'll Have

Deep and profound experience with modern JS frameworks (Next.js, Remix, Vue, etc.)

Expertise in the architecture of scalable web applications using modern patterns (server-side rendering, server components, etc.)

Experience taking problems, rather than strict guidelines, and developing well fitting solutions, collaborating with others where necessary

A keen eye for and expertise in accessibility — it's an integral part of your workflow, not an afterthought

Clear thoughts on how to spend your time in the most impactful way. There’s always enough to do, but not everything is equally important

Excellent proactive communication skills with the ability to clearly articulate technical concepts to both technical and non-technical stakeholders

Conscious and responsible use of LLMs (Large Language Models) to assist with coding: you stay in control — AI is your tool, not the other way around

English (C1 or above): Required for day-to-day collaboration with international engineering teams, code reviews, technical documentation, and participation in cross-team discussions

German (C1 or above): Required for effective communication with local stakeholders and business partners

Nice to Have

Python knowledge — our language of choice in the backend

Experience in the energy sector

Experience in adjacent fields (Backend, Infrastructure, UX Design etc.)

 

Our Tech Stack

Frontend:

TypeScript

React & Next.js – hosted on Vercel

GraphQL

CSS-in-JS (currently PandaCSS)

Vitest, React Testing Library & Playwright

Monorepo structure

Backend:

Python (Django)

PostgreSQL

GraphQL

Perks and Benefits

Monthly public transport subsidy

Monthly lunch allowance

Discounted bike leasing

Company pension plan

Share options from Octopus Energy Group Ltd.

Advice and support for childcare via HeyNanny

Monthly childcare allowance

Parental leave bonus: We top up your parental allowance for 3 months so you can enjoy your parental leave more comfortably

Subsidies for fitness programs via Wellpass

Support for your mental well-being with our partner Open Up

Attractive training and career development opportunities

Free language courses via Busuu

 

Your further development is important to us, which is why we offer you:

Regular in-house tech talks

Participation in conferences, meet-ups and trade fairs

Reading and discussing tech books in our book club 

Possibilities to explore other domains that aren’t directly related to your day to day work

We are a great place to learn, work with talented engineers and have a lot of fun. Across Octopus, we're looking for genuinely decent people who are honest and empathetic. We are aware that some groups of people are less likely to apply to a role unless they meet 100% of the job requirements. Whoever you are, we encourage you to apply as you might just be the candidate we hire.

Our employees, with their unique skills and perspectives, are the driving force behind our success. As an equal opportunity employer, we celebrate diversity and commit to an inclusive work environment and fairness for everyone.

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!
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Interview prep

Walk in with sharper answers.

Use this as a quick practice sheet before you speak with the employer.

Mid
Technology & IT API integration CSS Javascript MySQL Operations Mid level

Likely questions

  1. Tell us about work you have done that is close to the Senior Frontend Engineer (m/w/d) role.
  2. How would you approach your first 30 days at Octopus Energy Group?
  3. Which of API integration, CSS and Javascript have you used recently, and what did it help you achieve?
  4. Describe a time you solved a problem without waiting to be told exactly what to do.
  5. How do you stay organised and communicate clearly when working remotely?

Prepare before the call

  • A recent example that proves your experience with API integration, CSS and Javascript.
  • One short story with a problem, your action, and the result.
  • Two examples that show the strengths listed on your CV.
  • A clear reason why this role and company interest you.
  • Your availability, preferred work style, and salary expectations.

Ask them

  • What would success look like in the first 90 days?
  • What are the main problems this hire should help solve?
  • How does the team give feedback and measure good work?
  • What does a normal working week look like for this role?
Practice line

I am interested in the Senior Frontend Engineer (m/w/d) role because I can bring practical experience in API integration, CSS and Javascript, learn the team quickly, and contribute to the outcomes Octopus Energy Group needs from this hire.

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