IT Network Administrator

Quick Facts

• Full-time IT Network Administrator role focused on network operations and security

Description

You will administer and optimize a company network environment (LAN, WAN, WLAN, VLANs, switching, routing) and further develop firewall and security solutions. The role includes network monitoring and troubleshooting with tools such as Checkmk and Wireshark, managing IT assets with Snipe-IT, and implementing security measures aligned with ISO 27001 and ITIL processes. You will also automate recurring tasks and document network configurations.

Responsibilities

• Administer and optimize network infrastructure (LAN, WAN, WLAN, VLAN, routing, switching)
• Develop and manage firewall/security solutions (FortiGate, FortiManager, FortiAnalyzer, VPN, web filter, MFA)
• Monitor and analyze network infrastructure with Checkmk
• Perform monitoring and troubleshooting including protocol analysis (e.g., SNMP, NetFlow, Wireshark)
• Document and manage IT assets using Snipe-IT
• Build logical network segments, security zones, and VLAN structures
• Participate in network projects (site interconnections, infrastructure upgrades, new network concepts)
• Implement measures from the IT security strategy (e.g., aligned with ISO 27001)
• Automate recurring tasks and document network configurations
• Support incident, problem, and change management per ITIL

Requirements

• Completed training as IT specialist for networking (or comparable networking qualification)
• Relevant experience in managing complex network infrastructures
• Very good knowledge of switching, routing, VLANs, and network security
• Experience with Fortinet products (FortiGate, FortiManager, FortiAnalyzer)
• Solid knowledge of TCP/IP and key network protocols: DHCP, DNS, SNMP, NTP, RADIUS
• Practical experience with monitoring/troubleshooting tools such as Checkmk and Wireshark (or PRTG or similar)
• Experience with Snipe-IT or comparable ITAM solutions
• Independent, structured, and solution-oriented working style
• Strong communication skills; good German and English