Senior Backend Developer

Requirements:

• Demonstrated expertise as a Senior Backend Developer.
• Proficiency in Python as our 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.
• Effective communication skills that support teamwork and collaboration.
• Strong abilities in software design, problem-solving, and debugging.
• Enthusiasm for continuous code improvement and learning from peers.

Responsibilities:

• Help build full-stack cloud apps as part of our backend engineering team.
• Use Python and AWS Cloud services on the backend.
• Adopt a serverless-first approach to application design.
• Collaborate 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.
• Contribute to resolving the complexities inherent in large-scale systems and extensive datasets.
• Work closely with our Product, Data, Front-end, Platform, and Security teams.

Technologies:

• AWS
• Backend
• Cloud
• Git
• GraphQL
• Support
• Python
• Security
• Serverless
• TDD
• LESS

More

We are a dynamic energy provider dedicated to sustainable solutions in the UK. This is a senior-level backend Python engineering contract role initially lasting six months, with potential for extension. The role is hybrid, with one day a week based in London, and is full-time at 37 hours per week. We support diversity and are committed to equal opportunities for both employees and applicants.

last updated 43 week of 2026