Design, implement, configure, and maintain Cisco-based network infrastructure Support LAN, WAN, WLAN, and Data Center network environments Perform network troubleshooting, root cause analysis, and performance optimization Configure and maintain Cisco devices including: Routers & Switches (Catalyst, ISR, ASR) Firewalls (ASA / Firepower) Wireless Controllers & Access Points Implement and support: VLANs, STP, EtherChannel Routing protocols (OSPF, EIGRP, BGP – as applicable) NAT, ACLs, VPN (Site-to-Site & Remote Access) Network security best practices Participate in network design reviews, documentation, and implementation plans Coordinate with internal teams, vendors, and government client representatives Provide L2/L3 support and assist during audits, inspections, and change windows Maintain accurate network diagrams and technical documentation