Engineer needed for enterprise NOC environment. Will work as part of a team in enterprise WAN/LAN environment of over 800 devices. Group handles voice and data for large Fortune 500 corporation. Will be responsible for implementation and daily operations. Experience should include Cisco or Nortel routers and switches, VPNs, firewalls, DWDM, Sonet, layer 3 routers, layer 2 switches, various edge devices. CCSA or CCNA certification is a plus.