Senior Backend Developer

Salary: £35,000 - 55,000 per year

Requirements:

• Demonstrable experience working as a Senior Backend Developer.
• Strong commercial experience with Python as a primary development language.
• Hands-on experience developing RESTful APIs and/or GraphQL.
• Experience with AWS Cloud services.
• Experience with serverless architecture and technologies.
• Strong knowledge of Git and version control.
• Good understanding of software development best practices, including TDD, pair programming and code reviews.
• Strong software design, problem-solving and debugging skills.
• Excellent communication and collaboration skills, with the ability to work effectively across multidisciplinary teams.
• A willingness to engage with emerging technologies and contribute to solution design from inception.
• A passion for continuous improvement and learning from colleagues and peers.

Responsibilities:

• Play a pivotal role within our backend engineering team, helping to build cloud-based applications.
• Develop backend solutions using Python and AWS Cloud services.
• Adopt a serverless-first approach to application design.
• Collaborate within an Agile team alongside other backend engineers and product designers.
• Strategise, develop, test and deploy new features and experiments.
• Participate in collaborative coding practices, including pair programming and code reviews.
• Contribute to resolving the complexities inherent in large-scale systems and extensive datasets.
• Work closely with Product, Data, Front-end, Platform and Security teams.
• Help drive continuous improvement across development practices and technical solutions.

Technologies:

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

More:

We are a dynamic energy provider dedicated to delivering sustainable solutions across the UK. This is an initial 6-month contract with potential for extension, based in London (EC1M 6PB). The role is full-time, 37 hours per week, with one day per week onsite in London. We are a family-owned business with a credible and honest approach, focused on building long-lasting relationships with both clients and candidates. We celebrate and support diversity and are committed to ensuring equal opportunities for both employees and applicants.

last updated 39 week of 2026