Founding Engineer

About the Role This is a founding engineering role at an early-stage AI startup building autonomous agents that automate complex processes for industrial enterprises. You'll work across the full stack — from React frontends to cloud infrastructure to LLM-powered backends — with direct influence over both the product and the engineering culture being built from the ground up. What You'll Do Architect and ship end-to-end features, balancing near-term impact with long-term scalability. Design agentic systems that use LLMs for reasoning, document extraction, and enterprise process automation. Implement AI best practices to ensure autonomous agents operate with precision, security, and industrial-grade reliability. Own the complete user journey — refining frontends, architecting backend logic, and managing cloud infrastructure as needed. Build mission-critical, secure, and resilient AI solutions held to the highest standards for data integrity. Proactively identify and resolve critical problems outside your immediate scope, from infrastructure bottlenecks to customer friction points. What We're Looking For 3+ years building full-stack applications with Python backends and React frontends in production environments. Practical production experience building and deploying LLM-based agentic systems or AI agents. Strong proficiency with Python backend frameworks — FastAPI, Pydantic, and SQLAlchemy. Production experience with TypeScript and React for building user interfaces for complex workflows. Hands-on experience with agentic frameworks such as PydanticAI, Google ADK, LangGraph, or equivalent tools. Experience designing mission-critical systems with high reliability, security, and data integrity requirements. Comfortable shipping rapidly using AI coding assistants (e.g. Cursor, Copilot, Gemini) to increase velocity. Experience with cloud infrastructure deployment and management for production applications. Nice to have: Experience with LLM observability/evaluation tools, ERP or enterprise supply chain integrations, document extraction and unstructured data processing, or fluency in German. Location Hybrid — Berlin, Germany. Visa sponsorship is not available.