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# IT-Systemadministrator Infrastruktur & IT-Security

- **Company:** Amadeus FiRe AG
- **Location:** Mannheim, Germany (Remote available)
- **Salary:** €65,000.0 - €80,000.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Wireless LAN, Active Directory, JIRA, Microsoft Azure, Network Analysis, Configuration Management Databases, Software Documentation, Cyber Security, Virtual Private Networks (VPN), Local Area Networks, Windows Servers, Security Information and Event Management, Information Security Management System, IT General Controls (ITGC), Firewalls (Computer Science), Microsoft InTune, Information Technology, Cisco Switches, User Accounts
- **Published:** May 31, 2026
- **Apply:** https://www.xing.com/jobs/mannheim-it-systemadministrator-infrastruktur-it-security-154716162

## About the Role

* Abgeschlossene Ausbildung im IT-Bereich oder eine vergleichbare Qualifikation
 * Fundierte Kenntnisse in IT-Security und Netzwerktechnik
 * Praxiserfahrung mit Microsoft 365, Azure, Sophos Firewalls, Jira und Cisco-Switches
 * Erfahrung im Umgang mit Apple Devices, Windows Servern und Mobile Device Management
 * Kenntnisse in ITIL, Microsoft Intune, Nimbus Telefonie sowie Asset-Management
 * Sehr gute Deutsch- und Englischkenntnisse in Wort und Schrift

## Description

* Full-timeEmployment type: Full-time
 * €65,000 - €80,000 (employer salary)
 * Hybrid, * Administration und Weiterentwicklung von Windows-Servern, Active Directory und Entra ID
 * Verwaltung von Benutzerkonten, Gruppenrichtlinien sowie Zugriffs- und Berechtigungskonzepten
 * Betreuung von Microsoft-365- und Azure-Umgebungen
 * Verwaltung und Absicherung mobiler Endgeräte mit Microsoft Intune (Windows, iOS, iPadOS)
 * Betrieb, Wartung und Support der LAN-, WLAN- und VPN-Infrastruktur inkl. Netzwerksegmentierung und Hardware
 * Pflege und Aktualisierung der Netzwerk- und Systemdokumentation
 * Umsetzung und Überwachung von IT-Sicherheitsmaßnahmen nach KRITIS und ISO 27001
 * Betrieb und Konfiguration sicherheitsrelevanter Systeme (z. B. SIEM, CMDB, Monitoring)
 * Unterstützung bei internen und externen Audits (z. B. ISMS, ITGC)
 * Bearbeitung komplexer Supportanfragen sowie Durchführung von System- und Netzwerkanalysen


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