The role involves partnering with the CTO to define architecture, make build-vs-buy decisions, and set engineering standards that become the foundation for all future hires. The role owns the FastAPI / Supabase stack end-to-end—schemas, ingestion pipelines, auth, and the processing layer that turns messy construction documents into structured, actionable data. The role also designs and builds the multi-agent AI system powering bid comparison, clause extraction, risk detection, and knowledge graph sync, including how agents collaborate, fail, recover, and improve. It includes defining evaluation infrastructure and tooling to measure accuracy, recall, failure modes, and cost, plus delivering the Next.js front-end that contract managers trust as a structured workspace. This is not a senior engineer seeking a comfortable seat; it is a founder-style opportunity where the engineer builds like a founder—setting up eval infrastructure, revising critical layers, and talking to customers—operating as a technical co-founder with the CTO in Munich or ready to relocate, ASAP.