Mid Backend Engineer

About Us

We are a multi-award-winning digital payments and insight platform within the automotive industry, serving over 5,000 automotive retailers. We help drivers pay for motoring costs, accessories, and other services through a variety of payment options. We aim to build a solution that gives drivers peace of mind while enhancing customer experience and dealer profitability.

We are looking for a Mid-level Backend Engineer based in Sheffield or London to join our fast‑moving Tech Team. You will develop and improve AutoBI’s backend applications, data integrations, and AI-powered insight tools, including LLM-driven features that enhance data analysis and reporting.

This is a full-time hybrid role working from either of our UK offices (Sheffield or London – Hammersmith). Our ideal candidate would be able to work at least three days per week from one of these locations.

• Collaborate with relevant departments to deliver end-to-end features.
• Design, build, and maintain scalable backend services and APIs.
• Use Git for version control and tracking code changes.
• Write secure, maintainable, and well‑documented code.
• Diagnose and resolve system issues across the platform.
• Debug and maintain applications while ensuring code efficiency and performance.
• Attend review meetings and make meaningful contributions to maintain code quality and optimise performance.
• Contribute to backend infrastructure, deployment pipelines, and monitoring/logging.
• Contribute to AI-driven insight generation by integrating LLMs with structured data sources (e.g., SQL, Power BI datasets) to enhance reporting and analytics capabilities.

We are excited to welcome a Mid Backend Engineer who shares our vision of making Bumper the leading automotive payment and insights platform. In this role, you’ll work in a dynamic, fast‑paced environment where data‑driven decision‑making is at the heart of everything we do. If you are an outgoing self‑starter who enjoys new challenges and new technologies, we’d love to hear from you.

• 4+ years of experience developing backend systems in a production environment.
• 4+ years of experience with Python and Django/Flask.
• Strong knowledge of SQL databases and experience optimising database performance.
• Experience building and integrating applications powered by Large Language Models (LLMs) (e.g., OpenAI, Azure OpenAI).
• Experience with CI/CD, testing frameworks (Jest, React Testing Library), or design.
• Understanding of software design principles and experience building REST APIs.
• Proficiency in Git and version control best practices.
• Focus on performance, accessibility, and user experience.
• Strong time‑management skills and the ability to meet deadlines.
• Great collaboration skills for cross‑departmental projects.

• Experience working in fintech, payments, e‑commerce, or automotive sectors.

• Competitive salary.
• Company bonus scheme.
• Private healthcare and Medicash plan.
• 26 days holiday + bank holidays, plus volunteer days throughout the year (prorated).
• Tax‑saving salary sacrifice pension with Aviva.
• Salary sacrifice cycle to work, Octopus Electric Vehicle, and nursery fee schemes available.
• Benefits platform with £250 per year for wellbeing and £150 per year for development.
• Bumper Flex policy for better work/life balance.
• Annual company‑wide Bumper Retreat.
• Paid leave for primary and secondary carers.

Important:
This position is not eligible for visa sponsorship. We can only consider candidates who already have the right to work in the UK.