Senior Principal Network Engineer, Tucson, AZ - ONSITE

This engineer will serve as a networking subject matter expert within Raytheon Digital Technology’s Classified Infrastructure Services organization. Responsibilities include supporting LAN/WAN hardware and software, resolving complex performance and service issues, reviewing security compliance, and delivering network upgrades and infrastructure projects. The position also emphasizes technical documentation, vendor coordination, long-range planning, and mentoring other technical staff. It suits an experienced network professional who can work independently in classified environments, communicate effectively across teams, and occasionally work nonstandard hours or travel to domestic sites. The role is based onsite in Tucson and requires an active U.S. Secret clearance and U.S. citizenship.