Hands-on senior-level technical position supporting network, systems, and data center infrastructure. Approximately 90% on-premises. Local travel to 15+ sites within Phoenix metro. Required: Cisco networking, Palo Alto firewalls, data center (racking, cabling, power, cooling), VMware, ITIL processes, patch management, multi-site experience, clean safety record. Preferred: Cohesity, Splunk, ManageEngine, Dell infrastructure.