Design and build scalable backend systems, robust APIs, data models, and integrations using Python, GraphQL, PostgreSQL, NoSQL databases, and AWS. Collaborate within cross-functional teams, contribute to frontend applications when needed, own features through delivery, and promote maintainable engineering practices. Mentor teammates and use AI tools to improve development. Frontend experience with React, TypeScript, and Next.js, plus event-driven architecture experience, is beneficial.
What we do. Electric Car Leasing
Why we do it. Greener. Fairer. Future.
We’re looking for a Senior Software Engineer (Python) to join our product and engineering team building the systems that power our ability to revolutionise the electric car leasing industry.
Our tech stack is Python with GraphQL, PostgreSQL and NoSQL databases, running on AWS, with a React/Next.js frontend.
What you'll do...
- Design and build robust APIs, integrating our own and third-party services to optimise and automate core business processes.
Architect and evolve backend systems and data models that are performant, scalable, and built to last.
Work across multiple data sources, designing expressive, well-structured schemas.
Contribute to frontend applications when needed, helping shape experiences that work well for our users.
- Care about the code you write and its long-term maintainability.
- Contribute ideas, share knowledge, support, mentor, and raise the game of those around you.
Work within a dedicated cross-functional team on key products for our customers and internal teams.
What you'll need...
Deep expertise in Python, with strong software engineering fundamentals.
Proven experience designing and building APIs, ideally using GraphQL.
Comfort working with multiple data sources, including relational (PostgreSQL) and NoSQL databases.
Excellent understanding of core software engineering principles and best practices, and a track record of applying them to build robust, scalable, maintainable systems.
Proven experience collaborating within teams and across disciplines.
Experience using AI tech and tooling to augment development
A track record of taking ownership of features from inception through to delivery.
Any of the following would be a bonus
- Strong frontend experience with React, TypeScript, and Next.js, enough to engage with Full Stack engineering teams
- Experience with event-driven architecture/systems (EDA)
- Production experience with AI tech and tooling.
Why you'll love it here
- Don't feel like you meet all of our hiring criteria? Thats OK, apply anyway! We'd love to hear from you and have a conversation.
- Octopus Electric Vehicles, part of the Octopus Energy Group, won the Sunday Times best company to work for in 2024. We were named 6th out of the top 100 start-ups to work for by Tempo in 2025 and on Glassdoor we were voted 50 best places to work in 2022. Our Group CEO, Greg has recorded a podcast about our culture and 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 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! 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.
Similar Jobs
Information Technology
Develop and support Python microservices, web applications, APIs, integrations, and internal tools. Design reliable, secure, observable distributed systems and deploy services across Kubernetes environments. Collaborate with stakeholders and DevOps engineers on architecture, roadmaps, and delivery while protecting customer data. Investigate complex issues, improve data and automation workflows, and mentor junior engineers in a remote-first team.
Top Skills:
Amazon EksCi/CdDatabricksDelta LakeDockerGitlabGitopsJavaScriptKubernetesLinuxMySQLNode.jsPostgresPyo3PysparkPythonRabbitMQRestful ApisRustSQLTypescriptVuejs
Digital Media
Develop and enhance features for EnrollWise, contribute to a scalable software architecture, review code, collaborate on design and technical feasibility, and maintain software quality.
Top Skills:
ApolloAWSDjangoDjango OrmGraphQLNextjsPythonReact
Enterprise Web • Hardware • Internet of Things • Software
Own the full sales cycle for complex SaaS solutions sold to UK and Ireland manufacturing customers. Responsibilities include developing account strategies, managing large opportunities, navigating procurement, forecasting, demonstrating technology, building executive relationships, coordinating internal and channel partners, and achieving sales targets. The role requires strong manufacturing-sector sales experience, value-selling expertise, customer focus, and familiarity with modern sales and CRM technologies.
Top Skills:
Cloud SolutionsIotLinkedin Sales NavigatorOutreachPaasSaaSSalesforceZoominfo
What you need to know about the Belfast Tech Scene
If asked to name the birthplace of the RMS Titanic, you might not say Belfast. Similarly, if asked to name Europe's leading destination for foreign direct investment in new software development, Belfast might not come to mind. Yet, both are true. The city has emerged as a tech powerhouse, recently ranked among the best in the U.K. for tech careers — especially for software developers. It also leads the U.K. with the highest percentage of software development jobs advertised.
