Senior IT-Administrator (m/w/d)
Core
Senior IT Administrator supporting 350+ customers via on-site, remote, and ticket-based support, managing infrastructure, security, and documentation.
Role type
Senior IT Administrator (Infrastructure & Security)
Builds
IT infrastructure, security posture, and knowledge base for 350+ hosted clients
Domain
Enterprise IT, Security, Cloud & Virtualization
Deliverable
infrastructure
Required skills
Windows Server, Microsoft 365, Entra ID, Azure, VMware, Microsoft SQL Server, Networking, Firewalls, VPN, Storage, Backup, Virtualization, IT Security, ISMS/ISO 27001
Preferred skills
Project planning, external vendor coordination, continuous learning
Technologies
Windows Server, Microsoft 365, Entra ID, Azure, VMware, Microsoft SQL Server, IIS
Responsibilities
Support and advise employees on-site, remote, or via ticket system; Create and maintain IT documentation and internal knowledge base; Ensure IT landscape security through continuous training and awareness; Manage entire infrastructure including network, firewall, VPN, storage, VMWare, and backups; Act as central contact for software installations and workstation setup; Administer and monitor server landscape and hosting environment for 300 customers; Coordinate with external IT service provider; Contribute to Information Security Management System (ISMS) and ISO-27001 certification preparation; Drive IT project developments.
Seniority
Senior, hands-on IC