Middle Backend Engineer, Backoffice team (Python)

About InvestEngine We’re a London-based fintech on a mission to make ETF investing simple and accessible. Over 150,000 clients have trusted us with over £3 billion in assets — and we’re just getting started. We’ve been featured byMoneyWeek,FinderandForbes, and we’re growing fast with big ambitions. About the Role We’re looking for a Middle Backend Developer to join our Backoffice team and help us build and improve the technical foundation that supports our growing business. You’ll work on backend challenges, develop reliable and scalable services, and collaborate with Product and business teams to bring ideas to life. You’ll have the opportunity to contribute to technical decisions, improve existing systems, and grow your expertise in a supportive engineering environment. What You’ll Do Design, develop, and maintain backend services in Python 3.11 using Django / DRF Contribute to architectural discussions and technical decisions Work with MySQL and Redis to build reliable and performant systems Build and improve RESTful APIs for internal and external integrations Improve system performance, reliability, and scalability Collaborate with Product, Compliance, and Business teams to deliver impactful features and automate back office processes and workflows Investigate and resolve production issues, identify bottlenecks, and help reduce tech debt Follow best practices in Git workflows, CI/CD pipelines (TeamCity, GitHub Actions), and code quality Contribute to improvements in our a