Senior Full Stack Engineer — TypeScript / Next.js (100%, m/f/d)

Your mission You are the architect and builder of the customer-facing side of the LEASETEQ platform in Berlin, and the owner of our German market on it. You design the digital application journey and the portals that carry real customers, dealers and operations teams at production scale, and you make sure German credit rules, compliance requirements and dealer flows are represented correctly in a platform that also serves Switzerland and Austria. You work in a small, senior team where your decisions have direct product impact, and you naturally bring AI tooling into your daily engineering workflow without being asked. What you will do Own the German market on our customer-facing platform: credit and compliance requirements, dealer flows, German copy, and the acceptance criteria that make them verifiable Design and build the digital application journey — multi-step forms, validation, resumable state, document upload, KYC steps and the unhappy paths users actually hit Build and maintain