The NOC Engineer Tier III is responsible for training and mentoring Network Operations Center personnel and serving as the primary escalation point for Tier I and Tier II NOC engineers in resolving complex and high-impact network issues. · Support Layer 1 transport technologies (DWDM, SONET), Layer 2 and Layer 3 technologies (routing, switching, IP, MPLS, BGP, DHCP, NAT), and associated platforms including firewalls, routers, SD-WAN, VoIP, SIP, PRI, and hosted voice services.