Backend / Systems Engineer, Agent Infrastructure

ABOUT THE ROLE Build the backend systems and infrastructure that support reliable agent execution at an early-stage SaaS company. Working with the technical leadership and AI engineering team, you will own foundational architecture for persistent state, safe execution, permissions, and recovery. WHAT YOU'LL DO - Build backend services and data models to track operational work, ownership, and outcomes over time. - Develop asynchronous workflows that reliably handle retries, timeouts, external events, and interrupted execution. - Create shared APIs and tool-execution interfaces with authorization and customer-data isolation. - Improve how operational knowledge is stored, versioned, and served. - Strengthen testing and observability as the platform evolves. - Investigate production issues, design clear interfaces, and deliver maintainable solutions. WHAT WE'RE LOOKING FOR - At least 3 years of backend engineering experience building and maintaining production services. - Practical experience with Python and/or TypeScript/Node.js, and willingness to work across both. - Experience with PostgreSQL or another relational database, including data modeling and transactions. - Experience with background jobs, queues, or event-driven processing, including failure handling and data consistency. - Strong backend fundamentals and experience designing reliable asynchronous workflows. - Experience with workflow engines, multi-tenant applications, authorization, FastAPI, or agent tooling is a plus. Prior LLM experience is not required. COMPENSATION & BENEFITS Base salary is €80,000 annually. Visa sponsorship is not available. LOCATION On-site in Berlin, Germany.