Network Administrator, Senior Analyst, Onsite Tucson, AZ

This role supports classified network infrastructure used by Raytheon/RTX operations in Tucson, including routers, switches, firewalls, authentication systems, encryptors, and related management platforms. The administrator will configure and maintain equipment, investigate network issues, assess performance, document technical environments, and help plan improvements for reliability and future demand. The position also involves coordinating with vendors and third-party maintenance providers, supporting compliance activities, and occasionally working evenings, weekends, or traveling domestically. It suits a network professional with hands-on Cisco experience who can work independently under established procedures and communicate effectively with customers and technical partners. U.S. citizenship and an active, transferable Secret clearance are mandatory, while experience with classified systems, Cisco ISE, SolarWinds, STIGs, and network security is advantageous.