> Markdown version of [/jobs/ext/2933292-backend-systems-engineer-agent-infrastructure](https://www.wearedevelopers.com/jobs/ext/2933292-backend-systems-engineer-agent-infrastructure). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Backend / Systems Engineer, Agent Infrastructure - **Company:** xHeron Solutions - **Location:** Berlin, Germany - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Systems Engineering, Relational Databases, Python (Programming Language), PostgreSQL, Node.Js, TypeScript, Management of Software Versions, Large Language Models, Backend, Fastapi - **Published:** September 16, 2026 - **Apply:** https://www.adzuna.de/details/5884228314 ## About the Role What Makes You a Great Fit * Strong backend engineering skills in Python and/or TypeScript/Node.js, with willingness to work across both. * Practical experience with PostgreSQL or another relational database, including data modeling and transactions. * Experience shipping and maintaining production backend services. * Familiarity with background jobs, queues, or event-driven processing, and an understanding of failure handling and data consistency. * The ability to investigate production problems, design clear interfaces, and deliver maintainable solutions. Around 3+ years of backend engineering experience is a useful guide, not a hard requirement. The systems you've owned matter more than the number. Nice to have: experience with workflow engines, multi-tenant applications, authorization, FastAPI, or agent tooling. Prior LLM experience is not required. Strong backend fundamentals and an interest in learning the agent domain matter more. You May Not Be a Great Fit If * You want to configure infrastructure, not design the systems underneath it. * You need a fully scoped spec instead of investigating ambiguous problems yourself. * You've never shipped and maintained a production backend service. * You favor clever or complex solutions over simple, maintainable ones. * You're looking for a defined 9-to-5. ## Description xHeron takes responsibility for guest operations for short-term rental businesses: guest communication, coordinating teams, resolving issues. Today, that operating scope is delivered through a mix of people, software, and AI. We're building the technology to handle more of that work autonomously, without turning into another tool customers have to supervise. We're looking for a Backend / Systems Engineer to build the software that makes this reliable: persistent state, safe execution, permissions, and recovery across humans, agents, and external systems. Tasks What You'll Own * Data models & state: Build backend services and data models that track operational work, ownership, and outcomes over time. * Asynchronous workflows: Develop asynchronous workflows with reliable handling of retries, timeouts, external events, and interrupted execution. * APIs & tool execution: Build shared APIs and tool-execution interfaces, including authorization and customer-data isolation. * Knowledge infrastructure: Improve the infrastructure for storing, versioning, and serving operational knowledge. * Platform quality: Strengthen testing and observability while evolving the existing platform alongside our CTO, AI engineer, and product engineering team. ## Related Videos - [Intro to FastAPI](https://www.wearedevelopers.com/videos/462-intro-to-fastapi) - [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock) - [Stop using Node.js like in 2020! What changed and what you can do today with Node.js](https://www.wearedevelopers.com/videos/100011-stop-using-node-js-like-in-2020-what-changed-and-what-you-can-do-today-with-node-js) - [Headless by Design: Building Enterprise Systems That Agents Can Actually Use](https://www.wearedevelopers.com/videos/100092-headless-by-design-building-enterprise-systems-that-agents-can-actually-use) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) - [Building AI Applications with LangChain and Node.js](https://www.wearedevelopers.com/videos/1512-building-ai-applications-with-langchain-and-node-js) ## Related Articles - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [The 7 Most Popular Backend Frameworks for Developers](https://www.wearedevelopers.com/magazine/403-the-7-most-popular-backend-frameworks-for-developers) - [Finding Jobs in Germany](https://www.wearedevelopers.com/magazine/375-finding-jobs-in-germany) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Where To Find Software Engineering Jobs](https://www.wearedevelopers.com/magazine/396-where-to-find-software-engineering-jobs)