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# Senior Systemadministrator

- **Company:** Yer Group
- **Location:** Neuss, Germany
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Active Directory, Cyber Security, Dynamic Host Configuration Protocol, Domain Name System (DNS), Microsoft SQL Server, Windows Servers, Citrix Systems, Public Key Infrastructure, Windows PowerShell, Prometheus, Software Distribution, Grafana, Git, Information Technology, CIS Benchmarks, Xendesktop, Wsus, Docker, Jenkins
- **Published:** October 3, 2026
- **Apply:** https://www.adzuna.de/details/5907104572

## About the Role

* Mindestens 10 Jahre Erfahrung in der Windows-Server-Administration, davon mehrere Jahre in einer Senior-Rolle
 * Fundierte Erfahrung mit Citrix Virtual Apps and Desktops sowie Upgrades und Migrationen
 * Sehr gute Kenntnisse in MS SQL Server, Active Directory, GPO, DNS, DHCP und PKI
 * Sehr gute PowerShell-Kenntnisse
 * Erfahrung in der eigenständigen Übernahme und Betreuung gewachsener IT-Infrastrukturen
 * Kenntnisse in Prometheus/Grafana, Docker, Jenkins, Git oder Chocolatey von Vorteil
 * Erfahrung mit IT-Security, CIS-Benchmarks und Hardening wünschenswert
 * Sehr gute Deutsch- und gute Englischkenntnisse

## Description

* Eigenständiger Betrieb und Weiterentwicklung einer Microsoft- und Citrix-Infrastruktur mit Schwerpunkt Citrix
 * Administration, Updates und Migrationen von Citrix Virtual Apps and Desktops sowie MS SQL Servern
 * Betrieb und Pflege von Active Directory, GPO, DNS, DHCP, PKI und WSUS
 * Automatisierung und Softwareverteilung mit PowerShell, MDT und Chocolatey
 * Betrieb und Weiterentwicklung des Monitorings mit Prometheus und Grafana
 * Umsetzung von Security- und Härtungsmaßnahmen für Windows und Citrix
 * Dokumentation bestehender Systeme und Prozesse zur langfristigen Wissenssicherung


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