IT Systems Administrator – Infrastructure & Security (m/f/d)

Administration and operation of security-critical IT infrastructures within an isolated network Setup, maintenance, and monitoring of client and server systems, with a particular focus on information security Installation and configuration of IT components, preferably BSI-approved hardware (e.g. firewalls, network components, and specialized clients) Execution of system and security updates on network-isolated systems, including the use of physical data transfer media Implementation of technical hardening measures to protect the system environment against unauthorized access Management of user and access rights concepts within protected network areas Documentation of technical systems in accordance with internal and external security and compliance requirements Collaboration with the Information Security team to ensure compliance with regulatory requirements The position is primarily site-based.

Occasional short on-site assignments at other locations in Germany may be required. Completed vocational training or a degree in IT (e.g. IT Specialist for System Integration, Computer Science) or an equivalent qualification Several years of professional experience in administering Windows environments, as well as in the areas of Active Directory, networking, firewalls, storage, and backup Strong knowledge of networking technologies, virtualization, and IT security, including experience with security-related tools and solutions Fluent German, both written and spoken (native level or equivalent), as well as good command of English Independent, structured, and solution-oriented approach to work Exciting, innovative, and sustainable projects Long-term career prospects and diverse opportunities for professional development 30 days of annual leave and flexible working hours to support a healthy work-life balance Flexible mobile working options, depending on the position Digital business processes enabling modern and efficient ways of working A variety of team events – from sports activities to social gatherings – fostering a strong team spirit A friendly, family-oriented working environment with open communication and short decision-making processes Company pension scheme for long-term financial security Wellpass membership providing access to a wide range of fitness, sports, and wellness facilities JobRad bicycle leasing for sustainable and convenient mobility Corporate Benefits with exclusive discounts at numerous brands and retailers