Senior Full Stack Software Engineer

Octopus Energy Group; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Octopus Electric Vehicles, part of the Octopus Energy Group, is seeking a Senior Fullstack Software Engineer (Python and React) to help build the systems powering our electric vehicle leasing platform.

You’ll work with Python, GraphQL, React and Next.js on AWS, designing scalable APIs and frontend experiences that delight customers and internal teams.

If you enjoy owning features from idea to delivery and collaborating across disciplines, we’d love to hear from you.

Qualifications

• Expertise in Python and React.
• Experience designing expressive APIs using GraphQL with multiple data sources.
• Experience with design systems and component libraries.
• Strong understanding of coding principles and best practices for scalable software.
• Proven ability to collaborate across teams and disciplines.
• Track record of owning features from inception to delivery.

Responsibilities

• Work within a cross-functional team on key products for customers or internal teams.
• Build APIs and integrate with services to optimise and automate processes.
• Develop frontend applications to create engaging user experiences.
• Create performant systems across modern browsers and devices.
• Care about code quality and future maintainability.
• Contribute ideas, share knowledge, mentor and raise the game of those around you.

Skills

Python

React

GraphQL

API design

Design systems

Coding principles

Team collaboration

Ownership

Next.js

AWS

Tools

Next.js

PostgreSQL

NoSQL

AWS

Job description

We’re looking for a Senior Fullstack Software Engineer (Python and React) to join our product and engineering team building the systems that power our ability to revolutionize the electric car leasing industry.

Our tech stack is Python with GraphQL, React with Next.js, PostgreSQL and noSQL databases, running on AWS.

Our tech stack is Python with GraphQL, React with Next.js, PostgreSQL and noSQL databases, running on AWS.

What you'll do...

• Work within a dedicated cross-functional team on key products for our customers or our internal teams.
• Build APIs and integrate with our own and third party services to optimise and automate processes.
• Develop frontend applications to create experiences that wow our users.
• Create performant systems that work consistently across modern browsers and devices.
• Care about the code you write and its future maintainability.
• Contribute ideas, share knowledge, support, mentor, and raise the game of those around you

What you'll need...

• Expertise in Python and React.
• Proficiency working with multiple data sources and designing expressive APIs using GraphQL.
• Experience working with design systems and component libraries.
• Excellent understanding of fundamental coding principles and best practices and experience applying these to create robust, scalable, maintainable software.
• Proven experience of collaborating within teams and across disciplines.
• A track record of taking ownership of the development of features from inception through to delivery

Any of the following would be a bonus

• Proficiency in TypeScript and Next.js.
• A working knowledge of AWS and infrastructure as code (IaC) practices.
• Experience with event driven architecture/systems (EDA).
• Production experience with AI tech and tooling

Why you'll love it here

• Octopus Electric Vehicles, part of the Octopus Energy Group, won the Sunday Times best company to work for in 2024. We were named6th out of the top 100 start-upsto work for by Tempo in 2025 and on Glassdoor we were voted50 best places to work in 2022. Our Group CEO, Greg has recordeda podcast about our cultureand how we empower our people
• 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 aunique 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! Visit our perks hub -Octopus Employee Benefits

Things to Note...

• just to let you know, we are dog friendly company so you may see our 4 legged friends in the offices - feel free to bring yours! Rest assured though, we've taken lots of precautions for those who have allergies
• We use AI to help us assess applications fairly and objectively. We’re totally fine with you using AI as a tool to help prepare too. That said, when we get to the interview and assessment stage, we’re really interested in hearing your unique perspective and real-world stories. That’s the stuff we can’t get from a bot or a prompt!

About us

The electric revolution has arrived - and from 2035 you’ll no longer be able to buy a new petrol or diesel car in the UK.

We’re building a whole new way for drivers to join the electric charge and not only learn about and shop for their EV online, but experience a 'lease for life' through an industry changing customer experience. This is the chance to join one of the UK’s most exciting start-ups – making it easy for individuals and businesses to go electric by getting their car, charger and energy all in one cracking deal.

Octopus Electric Vehicles launched in 2018 to make it seamless to switch to cleaner, greener driving. Our mission is to drive sustainable change, decarbonise the planet and provide our customers with fair pricing and a fantastic experience.

We're an Octopus Energy company—an innovative new energy supplier. We are part of the Octopus Energy Group, which seeks to improve the lives of millions of people by transforming the industries we operate in. The Octopus Group incorporates Octopus Energy, Octopus Healthcare, Octopus Investments, Octopus Property, Octopus Ventures and Octopus Labs.

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.

Where necessary, we sometimes use AI tools to help with parts of our hiring process, like reviewing applications or assessing responses. We’re lucky to receive a huge amount of interest, so these tools help our recruiters manage that volume, not replace them. Ultimately, every hiring decision (for example, whether to progress your application or not) is always made by a real person in our Talent team. If you’d like to know more about how we use your data, you can reach out to us via email at [e-mail]. We’re happy to help!