Network Infrastructure Management Specialist

Quick Facts

• Role: Network Infrastructure Management Specialist (m/f/d)
• Department: IT Communication and Networks
• Work model: Full-time (39 hours/week); part-time possible
• Contract: Permanent position
• Location: Darmstadt (Luisenplatz 5a)
• Pay: TVöD
• Mobile work: Up to 50% after probation

Description

You will support the operation and administration of complex network infrastructure, including hybrid-cloud environments with Microsoft 365 (MS365). The role focuses on firewall/VPN and external mail gateway administration, network design and documentation (routing/switching, VLANs, subnets, IP ranges), and monitoring performance and availability. You will also plan and implement network projects and provide 2nd-level support, with a required successful security clearance (SÜ 2).

Responsibilities

• Administer the firewall environment, including VPN connectivity for external locations: implement policy changes, monitor systems, analyze logs, plan and deploy updates, and ensure antivirus
• Administer the external mail gateway: implement policy changes, antivirus and spam protection, monitor systems, and plan and deploy updates
• Document and prioritize network requirements and align them with the team, including MS365 cloud/hybrid needs (Exchange Online, Teams, SharePoint)
• Integrate new locations, devices, services, and cloud resources into the network topology and keep documentation up to date
• Design subnets and VLANs; reserve and document IP address ranges
• Test high availability for on-prem and cloud environments; plan backup links and failover mechanisms and oversee implementation
• Monitor and analyze network performance in on-prem and cloud environments
• Install, configure, maintain routers, switches, and security features; perform patch management
• Perform troubleshooting and vulnerability analyses
• Provide 2nd-level support for the network domain
• Update network plans and document configurations and protocols
• Independently plan and deliver assigned projects

Requirements

• Bachelor of Science in Computer Science or Information Technology (or equivalent Bachelor-level qualification) with at least 3 years of relevant experience in network engineering, including hybrid-cloud environments (MS365)
• German language skills: C1/C2 (written and spoken)
• Strong MS Office knowledge
• Multi-year practical experience operating complex network infrastructures including MS365 hybrid-cloud
• Extensive knowledge of routing, switching, and fabric
• Firewall and VPN expertise
• Knowledge of common network software (ideally Extreme Networks) and current MS365 administration tools
• Willingness for on-site work within Darmstadt and for services outside regular working hours
• Driver’s license class B
• Teamwork, communication, initiative, organizational skills, and willingness to continue training
• Ability to work safely at a computer (screen-capable)
• Willingness to undergo an extended security screening (SÜ 2) under the Security Screening Act; successful completion is a prerequisite for employment

Benefits

• Secure job, fair tariff-based compensation (TVöD)
• Family-friendly working hours and good work-life balance
• After probation: mobile work options up to 50%
• Promotion of equal opportunities; applications considered regardless of cultural/social background, age, religion/ideology, disability, or sexual identity
• Preferential consideration for applications from severely disabled and equal-status candidates where suitability is demonstrated
• Applications from women are particularly welcome to increase representation in this area