Title: Senior Windows Infrastructure Administrator Office Status: Onsite New York City, NY Pay Rate: Up to $65/hour Contract Length: Not specified ABOUT THE ROLE A global financial services organization is seeking a hands-on Senior Windows Infrastructure Administrator to support a broad enterprise technology environment. This role has direct ownership across Windows Server, VMware, Active Directory, Exchange, VDI, backup, storage, security, and infrastructure troubleshooting within a regulated environment. The ideal candidate brings 5+ years of enterprise systems administration experience, strong VMware and Windows/AD expertise, and professional Mandarin-speaking ability. RESPONSIBILITIES Install, configure, patch, upgrade, and troubleshoot enterprise Windows Server environments.Administer VMware vSphere infrastructure, virtual machines, and related production systems.Support VMware Horizon or comparable enterprise VDI environments.Manage Active Directory, Group Policy, users, groups, permissions, and access controls.Administer and troubleshoot on-premises Microsoft Exchange Server and related messaging services.Diagnose and resolve complex server, operating system, application, networking, and infrastructure issues.Maintain security baselines, endpoint protection, antivirus, access controls, and patching standards.Support enterprise backup operations and assist with SAN storage and server hardware.Provide escalated end-user and desktop support when issues require infrastructure-level troubleshooting.Coordinate technical issues and solutions with vendors and internal technology, security, and infrastructure teams.Maintain infrastructure inventory, licensing records, procedures, and technical documentation.