Experience with enterprise VoIP/UC platforms Experience with secure-access & zero-trust platforms (Zscaler, Palo Alto Prisma Access, Cisco Duo, Okta MFA, Cloudflare One) Knowledge of networking fundamentals: DNS, VPN, routing, NAT/SBC, proxies, SSL/TLS, firewall, network security Experience with endpoint & device management: Intune/Autopilot, Jamf, NinjaOne, SentinelOne Experience with collaboration suites: Google Workspace, Microsoft 365, email security protocols (SPF/DKIM/DMARC) Experience with CRM and ticketing systems: HubSpot, Jira Service Management, Zendesk Leadership experience in managing distributed support teams and resolving complex IT issues