Senior Back End Engineer

About the Role

We’re looking for a Senior Back End Engineer to build the systems that power [Employer hidden]’s German business. You’ll join one of the engineering teams focused on our German market, a cross-functional group that builds the proprietary tools (like our CRM) that our German operations staff use every day. You’ll own high-impact projects from the ground up, using your technical experience to improve how we serve small businesses while also helping to level up the wider engineering team. You’ll work on the systems that both internal and external teams rely on to serve customers. You’ll take engineering work from an initial problem through to delivery and see the outcome in daily use. You’ll design and build back-end services that support core operational workflows, including customer communication, underwriting, and collections.

What the job involves

• Simplify workflows: You’ll decide when and what to automate, translating operational needs into reliable code that reduces manual effort
• Evolve the architecture: You’ll identify ways to modernise our systems, managing trade-offs to keep them dependable as they scale
• Advocate for quality: You’ll be a sounding board for the team, using code reviews and design sessions to advocate for better engineering practices
• Expand your scope: You’ll join a growing team that supports emerging leaders, offering you opportunities to lead projects end-to-end, developing your commercial judgement

Who you are

• Proven track record in designing and building backend systems using Python, ideally with Django but open to other web frameworks such as FastAPI, Flask, or Ninja
• Experience working with relational databases, ideally PostgreSQL but open to MySQL or similar, with an understanding of performance and maintainability considerations
• Experience working on systems that support complex workflows, where data correctness and clear system behaviour matter
• A track record of taking work from an initial problem through to delivery, including shaping solutions, making trade-offs, and iterating based on how systems are used
• A drive to continually improve existing systems, not just building new ones, including simplifying and addressing long-standing pain points

Desirable

• Knowing how to scale systems: Familiarity with working on internal tools or platforms used by large operational teams
• Full-stack flexibility: Contributing to front-end codebases, particularly with React or TypeScript
• Modern deployment experience: Working with CI/CD pipelines or deployment workflows
• A data-driven mindset: Using data or metrics to assess whether changes have had the intended effect

Company Benefits

• Work where you work best: Twice a year we rent houses in places like Sicily and the French Alps where each team can work together for a week poolside. We champion flexible working in all our teams
• Invest in [Employer hidden]: We want people to be invested in [Employer hidden]'s success so after six months you'll be awarded share options
• Keep yourself healthy: We offer comprehensive health insurance and cash plans. You'll also get gym discounts and we host yoga classes in the office every week
• Start (and end) your day right: Each floor of [Employer hidden] HQ has a fully stocked fridge for breakfast and every Friday we unwind with beers and wine
• Life-work balance: We know your life outside of work comes first. We offer enhanced maternity and paternity leave for new parents plus a nursery benefit. We also have unlimited unpaid leave
• Learning and development: Whether you want to learn to code, experiment with motion design, or beat cognitive biases, you'll have time and budget to invest in your professional development

About [Employer hidden]

UK SMEs are the backbone of a complex economy that is constantly changing, so the need for fast and responsive access to finance is becoming more and more important to ensure their success and growth. [Employer hidden] allows SMEs access to business loans in less than a minute, with its API and business marketplace partnerships. With offerings like [Employer hidden]'s, gone are the days where waiting up to eight weeks for a loan decision was viable. Its simplified business loans of £1,000 - £500,000 come with no fees attached, and applying online takes no more than five minutes. The ready availability of [Employer hidden] loans gives business owners a level of certainty, so that they can make instant decisions to help their business grow. [Employer hidden] has made a number of partnerships with other players in the business finance space, including an impressive industry-first invoice checkout integration with QuickBooks. Funding raised by the company, which is now operating at net profitability, will enable it to meet a recent surge in demand for corporate loans and offer more to larger SMB businesses. And the company has made several billion in funding available to over 100,000 businesses since launching, positioning itself as a leading European fintech.