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Senior Network Administrator
vor 2 Wochen
Job Advertisement Senior Network AdministratorWe are searching for a Senior Network Administrator at our HANNOVER (DE01) facility. Main mission of the roleNetwork Operations and AdministrationIndependent administration and monitoring of the company-wide network infrastructure (IT/OT), including switches, WLAN, routing, and VLANs. Development and implementation of improvement measures to enhance network stability and performance. Creation and maintenance of technical documentation.Firewall and VPN SystemsManagement and configuration of (global) central firewall and VPN systems (Fortinet) in coordination with supervisors and the IT team. Implementation and optimization of technical security measures.Participation in IT ProjectsPartial responsibility for infrastructure projects – from planning and coordination to the implementation of individual technical work packages.IT Security and ComplianceSupport in ensuring compliance with internal and external security requirements (, ISO 27001, NIS2). Involvement in vulnerability assessments and the implementation of appropriate mitigation measures.Process Improvement and IT Environment DevelopmentActive contribution to the ongoing development of technical processes and standards in the IT department. Proposing ideas to optimize infrastructure, security, and operations.IT Administration (Servers, Services, Systems)Support in managing physical and virtualized Windows servers. Participation in patch management as well as user and group administration. Troubleshooting of technical issues within the IT/OT system landscape.Cloud and Standard Services (Microsoft 365 / Azure)Support in the administration and further development of Microsoft 365 (SharePoint, Exchange, Teams, etc.) and Azure services. Execution of administrative tasks such as license management and technical configurations.User Support and TrainingHandling of IT support requests. Creation of technical guides and conducting IT-related training sessions and user onboarding.Skills, knowledge and abilities Completed vocational training in IT (, IT specialist for system integration) or a comparable qualificationAt least 3 years of hands-on experience in the administration of network infrastructures, ideally in an international environmentSolid expertise in managing Fortinet firewalls and VPN systems as well as in routing, VLANs, WLAN, and troubleshooting network issuesProven experience in operating, optimizing, and documenting network infrastructures (IT and OT), preferably using HPE/Aruba componentsFamiliarity with common IT security standards and regulatory frameworks (, ISO 27001, NIS2), along with practical experience implementing related measuresTrack record in technical project work: planning, coordinating, and executing assigned work packagesWillingness to support end users and share knowledge through training and onboarding sessionsIndependent and solution-oriented mindset, paired with a high degree of responsibility and reliabilityExcellent German and good English skills, both written and spokenIdeally, you also bring:Additional experience with HPE/Aruba switching and WLAN technologiesKnowledge of Windows Server administration and virtualized environments (VMware)Experience managing and enhancing Microsoft 365 and Azure services, especially Exchange Online, SharePoint, Teams, and OneDriveSkills in creating technical documentation as well as training materials or internal user guidesA keen interest in continuously improving processes, standards, and technical operations within ITAbout RFS Radio Frequency Systems (RFS) delivers the end-to-end RF solutions and expert services needed to evolve wireless and broadcast networks today and tomorrow. Our cables, connectors & antenna systems are based on more than 100 years of experience delivering cutting-edge RF solutions and industry firsts. As a result, our solutions are recognized globally for their innovation, superior performance and unmatched quality. For more information, visit , or follow us on Twitter:
