Manage network infrastructure including Firewalls, Routers, Switches, IPS/IDS, and wireless security. Oversee SAN, VMware, backups, and disaster recovery strategies. Administer Microsoft Office 365, Intune, Exchange, Azure, and data security. Maintain Windows Server, Active Directory, DNS, DHCP, IIS, SQL Server. Support Linux servers (preferably RHEL) and ensure network security & troubleshooting.