Network Design & Implementation: Create high-level/detailed designs for core, edge, and aggregation IP/MPLS networks. Configuration & Provisioning: Configure and deploy MPLS-based services, including L3VPN, VPLS, and Segment Routing on high-end routers. Routing Protocols: Manage and optimize IGP (ISIS, OSPF) and EGP (BGP/MP-BGP) for efficient path forwarding. Troubleshooting & Maintenance: Act as an escalation point for complex L2/L3 network faults, performing root cause analysis. Traffic Eng