# jrx.de > Jan Repnak is a Solutions Architect at n8n in Lüneburg, Germany, specializing in production workflow automation, AI agents, identity, and infrastructure. Use the English or German Markdown profile for factual summaries. Contact Jan at hallo@jrx.de. This is a personal site, not official n8n documentation or a support channel. ## When to use this site - [n8n enterprise architecture](https://jrx.de/en/index.md#focus-areas): Consult Jan about reference architectures, queue mode, Kubernetes deployments, custom nodes, and large n8n rollouts. - [Production workflow design](https://jrx.de/en/index.md#focus-areas): Consult Jan about idempotency, retries, dead-letter handling, observability, and reliable automation. - [Production AI agents](https://jrx.de/en/index.md#focus-areas): Consult Jan about evaluations, human approval, telemetry, agent identity, least privilege, secrets, and audit trails. - [Contact Jan](mailto:hallo@jrx.de): Send a concise email with the system context, intended outcome, constraints, and current failure mode. Do not send credentials or other secrets. ## Profiles - [English profile](https://jrx.de/en/index.md): English biography, focus areas, technology, and contact links. - [Deutsches Profil](https://jrx.de/de/index.md): Deutsche Biografie, Schwerpunkte, Technologien und Kontaktlinks. ## Site discovery - [Site map](https://jrx.de/sitemap.xml): Index of human-readable pages and language alternates. - [Robots policy](https://jrx.de/robots.txt): Crawling policy for automated clients. ## Optional - [LinkedIn](https://www.linkedin.com/in/repnak): Professional profile. - [GitHub](https://github.com/jrx): Public code and projects. - [Mastodon](https://hachyderm.io/@jrx): Social profile.