IT Security Administrator | IT-Security-Administrator

Robert Half Deutschland - Delivery Center Strategic Accounts - Office

Gelnhausen, Hessen, Deutschland
Published Oct 31, 2025
Full-time
Permanent

Job Summary

This role involves the administration and enhancement of IT security infrastructure, focusing heavily on Windows Active Directory (AD), Entra ID, and Azure environments. Day-to-day responsibilities include managing and securing network technologies (LAN, WLAN, segmentation), operating firewalls, switches, and various IT security systems like VPN and Endpoint Security. The administrator will be responsible for implementing security updates, patches, and configuration changes, while also developing essential documentation, policies, and emergency concepts. A key component of the role is providing Second-Level Support and collaborating with global IT Security teams to analyze and document security incidents, ensuring compliance with local and global security guidelines. Candidates must possess a strong background, including at least five years of experience in IT security administration, coupled with fluent German and English skills, making this a critical position for maintaining robust security operations in a global context.

Required Skills

Education

Completed vocational training as an IT Specialist for System Integration or comparable qualification (e.g., Information Technology, IT, Computer Science)

Experience

  • At least 5 years of professional experience in IT Security Administration
  • Professional experience in configuring and building firewalls (preferably Fortinet)
  • Professional experience with SOTI, HPE Aruba & Central, and ClearPass
  • Professional experience in administering Microsoft Cloud environments (Azure, O365, Entra ID)

Languages

German (Fluent)English (Fluent)

Additional

  • Not specified