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aconnic

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

Core Competencies

Role fit
Core Competencies

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Demonstrates expertise in managing IT infrastructure, including Microsoft and Linux servers, virtualization environments, and network security. Proficient in administering Microsoft 365 and supporting users in complex IT environments while ensuring system performance and availability.

Highest-signal resume keywords
IT Infrastructure ManagementMicrosoft 365 AdministrationVMware VirtualizationNetwork Security OptimizationSystem Integration Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
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
Tools & Technologies
VMwareHyper-VProxmoxMicrosoft 365EntraIntuneSharePointTeamsExchange OnlineRemote Desktop Services
Certifications & Qualifications
Degree in Computer ScienceInformation Technology Qualification
Industry Keywords
IT InfrastructureSystem AdministrationCorporate IT EnvironmentsIT SupportNetwork Infrastructure

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