Server Administrator

To strengthen our IT team, we are looking for an IT Administrator with a focus on Server and Security at the earliest possible date due to our continued company growth. In this role, you are responsible for ensuring a stable, secure and available operation of the central server, virtualization and storage infrastructure. You help to maintain high IT availability permanently and to operate and further develop the system landscape technologically up to date.

• Administration of Active Directory (users, rights, groups, policies, DNS/DHCP) as well as the company-wide PKI including certificate templates
• Complete administration of Exchange SE (DAG, hybrid connection, OWA with reverse proxy) and the Microsoft 365 / Office 365 cloud environment
• Operation of email security with Proofpoint (spam filter, protection, logging) and email archiving
• Administration of several VMware clusters including the VDI environment (Horizon/Omnissa)
• Operation and maintenance of physical servers
• SAN and storage administration: commissioning, maintenance and troubleshooting (HPE 3PAR, LUN management, FC directors)
• Operation of the file cluster and administration of DFS shares
• Rights and authorization management including automation
• Operation of Icinga monitoring including development of own checks and UPS management (orderly shutdown in case of power failure)
• Basic firewall and network administration
• Participation in helpdesk in shift system (early/middle/late) including on-call duty

• Completed training as IT Specialist (System Integration) or comparable qualification
• Very good knowledge of Windows Server environments, Active Directory and Exchange
• Experience with virtualization (VMware) as well as server and storage operations
• Knowledge of Microsoft 365 / hybrid environments and email security (ideally Proofpoint)
• Experience with SAN/storage technologies (ideally HPE 3PAR) and monitoring solutions (e.g. Icinga)
• Knowledge of PKI and automation
• Structured, sustainable approach to IT operations and error analysis
• Independent, structured and solution-oriented way of working
• Broad interest in multiple topics and willingness to familiarize yourself
• High sense of responsibility for productive systems
• Clear communication – even on complex or critical topics
• Teamwork, reliability and service orientation in dealing with colleagues and specialist departments
• Interest in further development and new technologies
• Very good German and good English skills, written and spoken. The corporate language is German