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Contract

Senior Backend Developer

Rullion - Eon
City of London
money-bag Negotiable
Posted: 03 September 2026 (Today)
Closing date: 03 October 2026
Ref: 225565843

Join a dynamic energy provider dedicated to sustainable solutions in the UK. We seek enthusiastic and resourceful Backend Python Engineers at senior levels who are passionate about crafting exceptional products.

Initially it will be a six-month contract but there is potential for it to be extended. The role is Hybrid, with one day a week being based in their London. It is a full-time role, 37 hours per week. If this role feels right, send us your CV.

Accountabilities:

  • Playing a pivotal role in the backend engineering team, you will help to build full-stack cloud apps.

  • You''ll be using Python and AWS Cloud services on the backend.

  • Adopt a Server-less first approach to application design, collaborating within an agile team alongside other backend engineers and product designers.

  • Strategize, develop, test, and deploy new features and experiments.

  • Engage in collaborative coding practices such as pair programming and code reviews within the team.

  • Contribute to resolving the complexities inherent in large-scale systems and extensive datasets.

  • Foster close collaboration with our Product, Data, Front-end, Platform, and Security teams.

Knowledge and Skills:

  • Demonstrated expertise as a Senior Backend Developer.

  • Proficiency in Python as your primary language

  • Hands-on experience with RESTful APIs and/or GraphQL.

  • Proficiency in version control tools like Git.

  • Sound understanding of development best practices including pair programming and TDD.

  • Eagerness to engage with emerging technologies and collaborate with the team in designing solutions from inception, facilitated by effective communication skills that promote teamwork.

  • Strong abilities in software design, problem-solving, and debugging.

  • Enthusiasm for continuous code improvement and learning from peers.


Rullion celebrates and supports diversity and is committed to ensuring equal opportunities for both employees and applicants.

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