IT System Administrator

ROSIER Holding GmbH

full-time

Posted on: 3/24/2026

Location Type: Office

Location: Menden • Germany

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About the role

Support and further development of existing client and server systems (Windows, VMware, and Linux)
Support and further development of existing network technologies (firewalls, switches, WLAN, and remote access systems)
First- and second-level support for our sites (on-site and remote)
User and permission management in Active Directory, local, and external applications
Maintenance and optimization of LAN/WLAN infrastructure
Participation in the IT on-call rota after completion of onboarding

Completed vocational training in IT (e.g., IT Specialist in System Integration) or several years of verifiable experience in the relevant field
Strong knowledge of Windows environments (client/server), Microsoft 365, VMware vSphere, and Veeam
Good knowledge of various network technologies, TCP/IP, LAN/WLAN
Experience in IT support
Independent and structured working style
Strong communication and teamwork skills
Good German and basic English skills
Class B driver’s license
Willingness to participate in the IT on-call rota

Benefits

30 days of vacation
Time tracking with a working time account
Option to work from home
Height-adjustable desks
Opportunities for professional development
Bike leasing
Company events
Many additional benefits such as a drinks flat rate, capital-forming benefits (employer contributions to savings/investment plans), employee discounts, cooperation with a fitness studio, and a company pension scheme

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

WindowsVMwareLinuxnetwork technologiesTCP/IPLANWLANIT supportuser managementpermission management

Soft Skills

independent workingstructured workingcommunication skillsteamwork skills

Certifications

vocational training in ITIT Specialist in System IntegrationClass B driver's license