• Administer, configure, and optimize Windows Server environments (2016/2019/2022). • Manage and troubleshoot Active Directory, Entra ID, Group Policy, identity synchronization, and hybrid identity workflows. • Maintain and support VMware vSphere, ESXi hosts, vCenter, and virtual networking components. • Perform Windows Server patching, VMware patching, and vulnerability remediation in alignment with compliance requirements. • Assist with audit-related findings, remediation tasks, access reviews, and evidence preparation. • Administer and support AWS workloads including EC2, IAM, networking, and monitoring. • Troubleshoot DNS, DHCP, load balancing, and other core networking services. • Coordinate infrastructure tasks with remote data center technicians (racking, cabling, hardware replacement, power cycling). • Monitor server and virtualization performance and respond rapidly to infrastructure incidents. • Perform root-cause analysis and implement long-term corrective actions for recurring issues. • Participate in the Corp IT on-call rotation for after-hours infrastructure support. • Partner with IT Security to ensure strong security controls, identity governance, and compliance. • Support Service Desk escalations requiring deep infrastructure or troubleshooting expertise. • Maintain detailed documentation, runbooks, infrastructure diagrams, and configuration standards. • Recommend and implement improvements to operational workflows, automation, and system reliability.