IT Systems Administrator – Infrastructure

JUNG

IT-Systemadministrator managing infrastructure for JUNG's IT operations across Germany and internationally. Overseeing network, server, and security management while collaborating with various teams.

Posted 5/9/2026full-timeSchalksmühle • 🇩🇪 GermanyJuniorMid-LevelWebsite

Tech Stack

Tools & technologies

AzureCloudFirewallsLinuxSQLVMware

About the role

Key responsibilities & impact

Administration and further development of network infrastructure (LAN, WAN, WLAN, VPN, firewalls)
Operation and maintenance of physical and virtual servers (e.g., VMware vSphere, Proxmox VE) as well as central storage systems
Management and maintenance of the Microsoft and Linux server landscape
Technical integration of sites and subsidiaries into the existing system landscape
Management and monitoring of SSL/TLS certificates, internal PKI structures, automated renewals and security monitoring as part of a central certificate management system
Coordination, implementation and documentation of IT security and backup concepts
Support in the implementation of cloud and hybrid solutions (e.g., Microsoft Azure, SAP BTP)
Collaboration with internal departments, subsidiaries, partners and external IT service providers
Monitoring, troubleshooting and performance optimization during ongoing operations
Interface to facility management with regard to UPS, emergency power supply and early fire detection

Requirements

What you’ll need

Degree in (business) informatics/computer science, trained IT specialist (Fachinformatiker) or comparable qualification
Several years of experience administering complex IT infrastructures in industrial or production environments
Solid knowledge in: network administration (LAN/WAN/VPN, routing, firewall, VLAN)
Virtualization (VMware, Proxmox)
IT security and backup systems
Microsoft Servers and Linux distributions
Knowledge of SQL, Azure, cloud or S/4HANA integrations is an advantage
Good written and spoken English
Structured, responsible working style with high technical precision
Team-oriented and willing to travel internationally on occasion

Benefits

Comp & perks

Attractive pay under the collective agreement for the Metal and Electrical Industry North Rhine-Westphalia (incl. Christmas bonus, vacation pay and other contractual additional payments)
Work–life balance – flexible working hours including flexitime account, 30 days of vacation and mobile working
Structured onboarding with an individual induction plan and support from a mentor during the onboarding phase
Numerous qualification opportunities and occupational health measures, e.g., bike leasing and gym partnerships

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

network administrationLANWANWLANVPNfirewallsvirtualizationIT securitybackup systemsSQL

Soft Skills

structured working styleresponsible working styletechnical precisionteam-orientedcommunication skills

Certifications

degree in informaticsdegree in computer sciencetrained IT specialist