Tasks:

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• Planning, implementation and maintenance of LAN/WAN networks (Cisco, Juniper, Alcatel-Lucent, Lancom).
  
• Coordination and implementation of WAN connections via VPN and MPLS via various providers and technologies (FTTH/B, xDSL, MPLS, LTE)
  
• Administration and further development of the network security infrastructure (firewalls, IDS/IPS, NAC with Cisco ISE)
  
• Monitoring of the entire network infrastructure (national and international)
  
• Incident analysis and ticket processing (2nd level support)
  
• Troubleshooting and supporting customer operations
  
• Creation of network plans and documentation
  
• Support of the VoIP infrastructure (e.g. Cisco Callmanager, SBC)
  
• Maintenance and administration of the WLAN infrastructure
  

Qualifications:
 

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• Completed training or studies in the field of computer science, IT system integration or comparable qualification
  
• In-depth knowledge of network technologies (LAN/WAN, routing, switching, VPN, MPLS).
  
• Experience with Zscaler solutions – ZIA, ZPA
  
• Experience with security solutions such as firewalls (e.g., Checkpoint, Sonicwall, and Fortinet), IDS/IPS, proxy systems, and NAC (e.g., Cisco ISE).
  
• Working knowledge of authentication systems such as SAML, LDAP and MS Active Directory
  
• Knowledge of cryptography and security mechanisms.
  
• Cisco certifications (CCNA, CCNP) or comparable manufacturer certificates.
  
• Hands-on knowledge with network troubleshooting using tools such as Wireshark, tcpdump, Traceroute, and MTR
  
• Good knowledge of German and English, both written and spoken.