The role is a hybrid Full Stack Engineer (w/m/d) based in Unterhaching / München, working 40 Std./Woche with a salary in the EUR 60k-80k range, as the company scales its AI platform that already serves 10k+ users across 250+ companies and aims to reach 100k users. It centers on bringing AI to the SME sector through a central, all-in-one platform and delivering an intuitive UX so anyone can master AI while supporting millions of secure LLM calls per month. The role involves building and shipping high-quality full-stack features using TypeScript and React, designing robust backend systems capable of handling massive data and API requests, owning features from concept to operation, debugging production issues, and mentoring junior engineers through thorough code reviews. Key engineering challenges for 2026 include synchronizing and indexing terabytes of client data with permissions, ensuring high reliability for millions of LLM calls, spawning thousands of code sandboxes daily in a scalable and secure way, and building the base infrastructure for the custom integrations team to enable rapid system integration. The position operates within a fast, close-to-user development approach that prioritizes security and reliability, leveraging a stack including React, TypeScript, Python, tRPC, PostgreSQL, Kubernetes, and Docker, and integrating AI services such as OpenAI, Gemini, Claude, Mistral, and others.