Designs, administers, secures, and maintains WAN, LAN, WLAN, VLAN, VPN, VoIP, and firewall infrastructure across more than 50 North American locations. Responsibilities include network monitoring, troubleshooting, upgrades, audits, documentation, performance improvements, project management, information security support, escalation support, mentoring, and occasional branch-site travel. Provides onsite, remote, on-call, and emergency support while advancing shared IT services and network reliability.