October 13, 2026

IT Systems Administrator (Telephony)

Mid • On-site

40,000 - 45,000 EUR/yr

Dortmund, NW, Germany

Quick Facts

  • Focus: IT system administration with telephony responsibilities

  • Work model: hybrid with partial home office

  • Responsibilities: customer support (remote and on-site), Microsoft 365/Windows administration, and telephony operations (migrate/troubleshoot)

Description

You will administer and improve customer IT environments, with a particular focus on modern telephony solutions such as Teams telephony, Starface, and VoIP.

The role covers Windows/Microsoft 365 administration, supporting server, network, and cloud systems, and participating in security topics, projects, and migrations.

You will also document existing environments and advise customers technically.

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