Backend Developer

Praxy; Greater London; Hybrid; GBP 60,000 - 90,000; Full time

Job summary

Octopus Energy Group is seeking a backend engineer to join one of our cross-functional squads in the UK. You’ll work with the product manager and engineers to build critical services powering our end users and drive product innovation in a fast-moving industry.

You’ll influence how the backend delivers robust, scalable functionality, with a strong emphasis on observability and API-driven features for our EV charging and energy platforms.

Qualifications

• 2+ years of Python development experience.
• Good communication and ability to work in a team.
• Write robust and fault-tolerant software.
• Proficiency with Git and CI/CD workflows.
• Strong understanding of databases and data architecture.
• Experience developing APIs (REST, GraphQL, etc).

Responsibilities

• Develop backend services for core platform and integrations.
• Collaborate with product managers and engineers to deliver scalable features.
• Ensure observability, reliability and robust API design.

Skills

Python

Communication

Team collaboration

Tools

Git

CI/CD

Databases

REST/GraphQL APIs

Job description

We’re making electric vehicle public charging simple, by building the giant, virtual charging platform of the future. In just five years, Octopus Electroverse has become Europe’s largest eMobility charging network, with over 1.4 million connected electric vehicle chargers globally across 79 countries. Our customer ecosystem spans web, iOS, Android, CarPlay, Android Auto & Automotive OS. But this is just the start: we’re busy expanding internationally, growing our Charge Point Operator and OEM partners, and scaling our Octopus Fleet B2B proposition - all in the name of making public EV charging super simple for our customers. Electroverse is a cross-functional team of product, engineering, commercial, operations and marketing, all sharing a passion for shifting the industry towards EVs.

About the Job

You’ll join as a backend engineer in one of our primary squads. Working alongside the product manager and engineers in your squad, you will help develop the critical services that serve our end users. You’ll have the chance to work on highly impactful projects, fueling product innovation in a fast-moving industry and influencing how the backend can deliver robust and scalable functionality.

What you'll do

• Enable us to build quickly but robustly, using best practices in observability, data analysis and defensive programming, allowing us to safely scale our products and CPO integrations globally.
• Work with cross-functional stakeholders to break down complex problems, understand feasibility, and propose creative technical solutions that deliver a market-leading platform.

What we're looking for

• The passion to create something amazing in the climate space, and the mindset to learn and grow in a rapidly scaling business.
• 2+ years commercial experience with Python.
• Good communication skills, with an ability to consider product vision and propose creative technical solutions within a team.
• An ability to write robust and fault-tolerant software.
• Proficient understanding of Git and CI/CD.
• Good understanding of Databases and data architecture.
• Experience with API development (REST, GraphQL, etc)

Nice to have

• Experience in using web frameworks (Django).
• Experience working on B2B product features
• Experience working with OCPI
• Experience integrating third-party API solutions

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 were named the UK's top company to work for in 2025, and we ranked in the top ten in the Sunday Times Best Places to Work 2026. 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

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.