Backend Developer

Octopus Energy; Greater London; On-site; GBP 80,000 - 100,000; Full time

Job summary

A leading renewable energy provider in the UK is looking for a skilled backend developer to join their innovative team. You will be involved in creating scalable web services using Python and Django, contributing to greenfield projects in the renewable generation space. The ideal candidate has 2+ years of experience, strong problem-solving skills, and a passion for sustainable solutions. This is a fantastic opportunity to help shape the future of energy with a company dedicated to a greener tomorrow.

Qualifications

• 2+ years of experience in web service backend development.
• Ability to write robust and fault-tolerant software.
• Experience in regulated industries is a plus.

Responsibilities

• Develop and build products for renewable energy generation.
• Work on a greenfield project within the backend team.
• Collaborate with engineers and project team.

Skills

Python / Django

Git

GraphQL APIs

Continuous integration and deployment

Job description

About the role

About Us At Octopus we're passionate about powering a sustainable future. As pioneers in the renewable energy space, we don’t just invest in utility scale projects; we invest in people, communities and a greener tomorrow. We're on a mission to transform the renewable energy generation space with consumers at the heart of everything we do. From producing our own green energy, which powers homes at discounted rates through our Fan Club to developing new investment models, our development team is passionate about challenging the status quo and making a positive impact for the community.

Responsibilities

You’ll be one of the founding members of a new backend team that builds products for our Generation areas. Your initial mission will be on a greenfield project in the renewable generation & financial space - suitable for someone who enjoys getting stuck in from the very beginning, being part of structural thinking and developing from the ground up. You’ll have the chance to make a huge impact and influence how the backend grows to meet new challenges, whilst working alongside talented engineers and supported by an experienced commercial & project team. Overall, it’s an exciting opportunity to work like a start‑up within a global scaling EnTech business.

What you’ll need

• The passion to create something functional, scalable and loved by customers - with the mindset to learn and grow with the company
• Experience in the creation of the web service backend for a mobile or web app using Python / Django
• A strong understanding of the Python ecosystem with 2+ years of experience
• An ability to discuss vision and features within a team and propose creative solutions
• An ability to write robust and fault‑tolerant software
• Knowledge of (or a desire to learn) GraphQL APIs is a plus
• Experience of developing software in a regulated industry is a plus (banking, insurance, healthcare, investments)
• Proficient understanding of Git
• Familiarity with continuous integration and continuous deployment

Why 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 in 2022, on Glassdoor we were voted and our Group CEO, Greg has recorded and how we empower our people. We’ve also been placed in the
• 🎁 Visit our UK perks hub -

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 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.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.