11 days ago


Chicago, IL


Job Purpose

Provide network configuration and administration as a member of the CBTS network team. Responsible for implementation and support of network devices along with network design.  Responsible for on-call/escalated support for operations of CBTS managed customer networks.

Essential Functions

  • Routing/switching/firewalls -- The configuration, support, and troubleshooting of complex customer environments that encompass multiple datacenters (50%)
  • Load balancing/Wireless -- Supporting existing customers and the escalation point for tier II questions and issues (25%)
  • On-call support for the above (10%)
  • Network Design -- Design and build datacenter networks (10%) 
  • IPS -- Design and build as well as maintain existing customer IPS devices (5%)


  • 8 to 10 years of experience


  • Four years of College resulting in a Bachelor's Degree or equivalent
  • F5 certification a plus
  • CCNP / CCDP a plus
  • Security certification a plus

Special Knowledge, Skills, and Abilities

  • Cisco is the focus but Meraki, Juniper, Fortinet and Checkpoint, and Arista are all devices we work on
  • F5 load balancing subject matter expertise is needed
  • Experience with BGP, OSPF, and EIGRP with ISPs or large corporate LAN/WANs
  • MPLS VPN and VRF design and configuration.
  • Site-to-site VPNs along with client VPNs
  • IPv4 and IPv6 subnetting
  • LAN/WAN technologies including STP, QoS, NAT, SNMP, multicast, etc.
  • Securing networks with ASAs and IOS devices
  • Cisco Firepower IPS configuration and troubleshooting
  • Troubleshoot complex networks to identify root cause issue
  • Linux experience
  • Experience with packet capture programs -- Wireshark
  • Communication / Customer skills

Supervisory Responsibilities

No Supervisory Responsibility