Backend / Systems Engineer, Agent Infrastructure

ABOUT THE ROLE Build backend systems and infrastructure for reliable agent execution as part of a SaaS engineering team. You will take ownership of foundational architecture for persistent state, safe execution, permissions, and recovery, connecting people, agents, and external systems. WHAT YOU'LL DO - Build backend services and data models that 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. - Familiarity with background jobs, queues, or event-driven processing, including failure handling and data consistency. - Experience building resilient asynchronous workflows and investigating production problems. - Experience with workflow engines, multi-tenant applications, authorization, FastAPI, or agent tooling is helpful. Prior LLM experience is a plus, not a requirement. COMPENSATION & BENEFITS Salary: €80,000 annually. Visa sponsorship is not available. LOCATION On-site in Berlin, Germany.