As an L3 Network Administrator, you will be responsible for the design, implementation, administration, and advanced troubleshooting of enterprise network infrastructure. This includes LAN, WAN, WLAN, firewalls, load balancers, and VPN solutions across data centers and branch offices. The role requires deep technical expertise, handling escalations from L1/L2 teams, and ensuring network availability, performance, and security. Key Responsibilities: Provide L3 operational support for routers, switches, firewalls, load balancers, and wireless infrastructure. Manage and configure Cisco, Juniper, Arista, Palo Alto, Fortinet, F5, or equivalent platforms. Implement and maintain routing protocols including BGP, OSPF, EIGRP, MPLS, and VLAN configurations. Troubleshoot complex network performance issues, latency, and packet loss. Administer firewall policies, VPNs (IPSec, SSL), and remote access solutions. Manage WAN optimization, QoS, and bandwidth monitoring. Perform firmware/IOS upgrades, pa...