IT System Administrator – m/f/d

aconnic

IT System Administrator managing IT infrastructure and supporting projects at aconnic. Responsible for systems and networks ensuring stability and performance in a hybrid work environment.

Posted 7/10/2026full-timeHartmannsdorf • 🇩🇪 GermanyMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

DNSFirewallsLinuxMacOSVMware

About the role

Key responsibilities & impact

You plan, implement and maintain the IT infrastructure for aconnic and NewTal, ensuring system availability and performance
You manage Microsoft and Linux servers as well as virtualization environments using VMware, Hyper-V and Proxmox, ensuring a stable and high-performing IT landscape
You maintain our network infrastructure with Fortinet firewalls and HPE switches, configure routing and VLANs, and optimize security and performance
You administer Active Directory, DNS, DHCP and other domain services and ensure their seamless integration
You plan and apply updates and patches to ensure the stability, security and currency of our IT systems
You design and administer our Microsoft 365 environment, including Entra, Intune, SharePoint, Teams and Exchange Online
You manage Microsoft Terminal Servers, Remote Desktop services and our backup infrastructure based on Veeam Backup & Replication
You support users at 1st- and 2nd-level, resolve complex IT issues and coordinate server and network projects together with internal and external partners

Requirements

What you’ll need

Degree in Computer Science, Information or Communication Technology, a comparable IT qualification (e.g., Fachinformatiker for System Integration) or several years of experience administering IT environments in a corporate setting
Experience in system integration and operating modern IT infrastructures
Confident handling of Microsoft client and server operating systems, Linux and Apple macOS
Experience with VMware (ESXi, vCenter), Veeam Backup & Replication and Microsoft 365 environments
Fluent German and good English skills
Strong team player with a sense of responsibility and a reliable working style
Willingness to learn, a desire for continuous development and an active hands-on mentality
Able to work independently and maintain oversight even in complex IT environments

Benefits

Comp & perks

Monthly non-cash benefit card (Givve Card) as a tax-free benefit
Decision-making processes based on democratic principles and at eye level
Flexible working hours with the option of two days of home office per week; no shift work and no on-call duty
A healthy work–life balance
Support for internal and external training opportunities so we can learn and grow together
Option to take a sabbatical
Health management because we care (e.g., on-site massages at the company)
Subsidised employee canteen with varied breakfast and lunch options, meal allowance and free beverages
Employee parking
Social intranet for sharing news and staying connected

ATS Keywords

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Hard Skills & Tools

Microsoft Server Operating SystemsLinux AdministrationActive DirectoryDNSDHCPVeeam Backup & ReplicationFortinet FirewallsHPE SwitchesRouting and VLAN ConfigurationSystem Integration

Soft Skills

Strong Team PlayerReliable Working StyleWillingness to LearnIndependent WorkOversight in Complex Environments

Certifications

Degree in Computer ScienceInformation Technology Qualification