Server Administrator - Linux, Windows & Virtualization

TA Bildungszentrum GmbH

Job

In this role, you will administer Linux and Windows servers, manage virtualization with Proxmox, develop AI infrastructures, handle backup systems, and plan server lifecycle management.

Job summary

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Job technologies

Your role in the team

  • Virtualization: You operate and further develop our Proxmox clusters. This includes Ceph storage, HAProxy/Keepalived, and the high-availability concept. You support the ongoing migration from VMware and Hetzner Cloud.
  • Linux servers: You manage our Debian systems, LDAP, and web servers (PHP, Moodle), and handle updates, upgrades, and security patches.
  • Windows Server & Exchange: You administer Exchange Server SE, including updates, load balancing, and signatures (CodeTwo). You also manage Active Directory and certificate replacement.
  • Video conferencing infrastructure: You operate more than ten Jitsi servers (including Jibri and TURN) and support the migration to Docker.
  • Backup & Monitoring: You are responsible for Veeam, the tape library and NAS, as well as monitoring with CheckMK. This includes restore testing and off-site backups.
  • AI platform: You operate and further develop our internal AI infrastructure (OpenWebUI, LiteLLM, OpenRouter).
  • Server planning: You plan the lifecycle of our servers, set up new systems, and document them in our knowledge base.

Our expectations of you

Education

  • Completed vocational training as an IT specialist in system integration, a degree in computer science, or an equivalent qualification

Qualifications

  • In-depth knowledge of Windows Server, Exchange, and Active Directory
  • Nice to have: Docker, Jitsi/WebRTC, Hetzner Cloud, Veeam, CheckMK, LLM tools
  • Structured and self-directed approach to work, with a passion for documentation
  • Very good German language skills

Experience

  • Several years of experience in Linux administration (Debian), ideally with automation and shell scripting
  • Experience with virtualization, ideally Proxmox and Ceph

What we offer

  • Permanent employment: a secure job in a modern, growing company
  • Flexible working hours: Your personal work-life balance through flexitime
  • Attractive starting salary: with performance-based compensation
  • 30 days of annual leave, plus time off in lieu or compensation for overtime
  • Innovative work environment: ergonomic workstation, state-of-the-art technology, diverse responsibilities
  • Employee Benefits: Health Promotion and Company Events
  • Training and professional development: Developing our employees through career advancement and certification programs, in-house training, and coaching
  • Employee benefits: Special rates with renowned providers
  • Unlimited coffee and fruit: provided free of charge
  • Discounted meals for employees in our varied company restaurant, featuring its own professional kitchen and a wide selection
  • Hansefit: Work out at a gym of your choice—we’ll cover most of the cost
  • Free employee parking and a central location: just 5 minutes from the main train station
  • Company pension plan: We care about your financial security—with an employer contribution of up to 30%

Benefits

Work-Life-Integration

Health, fitness & fun

Topics you will work on

Job locations

Map of the job locations
© OpenMapTiles, © OpenStreetMap contributors
  • Location Hamelin
    Niedersachsen, Germany

About your employer

TA Bildungszentrum GmbH focuses on the further education of professionals, offering various IHK certificate courses and advanced training.

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Established Company
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Onsite, Hybrid, Full Remote
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Server Administrator - Linux, Windows & Virtualization

TA Bildungszentrum GmbH