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 enterprise customers. You will own the full stack, from React frontends to cloud infrastructure to LLM-powered backends, and your contributions will directly shape both the product and the engineering culture from the ground up. What You'll Do Architect and ship end-to-end features, balancing immediate 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. Identify and resolve critical problems outside your immediate scope, from infrastructure bottlenecks to customer friction points. What We're Looking For 3 or more 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 in Python with frameworks such as FastAPI, Pydantic, and SQLAlchemy. Production experience with TypeScript and React for building intuitive interfaces for complex workflows. Hands-on experience with agentic frameworks such as PydanticAI, Google ADK, LangGraph, or equivalent, plus prompt engineering. Experience designing and shipping mission-critical systems with high reliability, security, and data integrity requirements. Comfort using AI coding assistants (such as Cursor, Copilot, or Gemini) to move fast and ship confidently. Experience with cloud infrastructure deployment and management for production applications. Bonus: experience with LLM observability or evaluation tools, ERP or enterprise supply chain integrations, document extraction or unstructured data processing, or fluency in German. Location Hybrid, based in Berlin, Germany. Visa sponsorship is not available.