IT System Administrator

Quick Facts

• Role: IT System Administrator (m/w/d)

• Focus: Administration and continuous improvement of IT infrastructure

Description

You will administer and further develop the organization’s IT infrastructure, ensuring reliable daily operations. The role covers Windows Server/Hyper-V, Active Directory/Microsoft Entra ID, Microsoft 365 services, network/firewall administration, backups and monitoring, plus 1st- and 2nd-level support across multiple locations. You will also coordinate external IT service providers and support internal development teams on technical requirements.

Responsibilities

• Administer and continuously improve the Windows Server environment (Windows Server 2022/2025, Hyper-V) including central enterprise storage infrastructure

• Manage Active Directory / Microsoft Entra ID, including Group Policy, permission models, and PowerShell automation

• Maintain Microsoft 365 (Exchange Online, Teams, SharePoint, Intune, Entra ID Connect)

• Administer network infrastructure: firewalls, routing, VLANs, SSL-VPN, and WLAN

• Operate backup solutions and monitoring; maintain IT documentation

• Provide 1st- and 2nd-level support for employees at multiple sites

• Coordinate and manage external IT service providers

• Work closely with internal application development to implement technical requirements

• Contribute to planning and implementation of IT projects and ongoing system landscape improvements

Requirements

• Completed training as Fachinformatiker Systemintegration or equivalent; career switchers welcome with proven practical experience

• Several years of experience in Windows Server and network administration

• Required knowledge: Windows Server/Hyper-V, Active Directory/Entra ID, PowerShell, Microsoft 365, TCP/IP networks, firewall administration, and backup solutions

• Preferred: Intune/MDM, Teams telephony/SBC, vulnerability management, network certifications (CCNA or similar), experience with AI-assisted tools such as Microsoft Copilot

• Solution-oriented, structured working style with enjoyment of contributing to change

• Service orientation and strong communication skills, including with non-technical colleagues

• Very good German (at least C1, written and spoken)

• Valid driver’s license class B

Benefits

• Permanent employment contract

• Supportive culture with flat hierarchies and real opportunities to shape processes

• Targeted training and certification opportunities

• Flexible working hours and home office by agreement

• Company car