Senior Full-Stack Engineer

Buying Labs is seeking a Senior Full-Stack Engineer to join the Tech team at their Hamburg headquarters. You will build the systems the business relies on every day, from internal applications to the data and AI capabilities behind them. This is a role for an experienced engineer who takes real ownership: designing solid systems, building AI into them where it adds value, and driving work through to production and real users.

You will own systems end to end, designing and building features across frontend and backend from technical approach through deployment and production support. You will build AI-powered features such as structured extraction, classification, automation, and agentic workflows, making them reliable through validation and evaluation. You will work closely with the business to understand processes and help shape what gets built and why.