Escalation-focused Systems Engineer supporting multiple client environments. Resolve Tier 1 escalations; administer Windows Server, Active Directory, and Microsoft 365; configure and maintain VLANs, switches, firewalls, VPNs; troubleshoot routing, connectivity, and network performance; support VMware virtualization; provide remote and occasional onsite support; document work; and follow security and access-control best practices while growing toward senior/architect roles.