Owns the technical relationship for assigned enterprise accounts across pre-sales, deployment, service delivery, and ongoing support. Provides engineering leadership for AV, unified communications, video conferencing, cloud collaboration, and managed services. Leads technical reviews, complex troubleshooting, escalations, root-cause analysis, platform administration, documentation, customer governance, and cross-functional coordination. Supports Microsoft Teams Rooms, Cisco collaboration, Webex, networking, cloud services, and enterprise infrastructure while driving service improvements and customer technology roadmaps.