Principal Engineer -Windows Linux

Windows & Linux AdministrationInstall, configure, and maintain Windows Server and Linux (RHEL, CentOS, Ubuntu) systemsPerform user and group management, permissions, and access controlsMonitor system performance, availability, and capacityApply patches, updates, and security hardeningTroubleshoot OS-level issues and system failuresCitrix AdministrationAdminister Citrix Virtual Apps and Desktops (XenApp / XenDesktop)Manage Citrix StoreFront, Delivery Controllers, and DirectorTroubleshoot session, application, and performance issuesPerform upgrades, patching, and maintenance of Citrix environmentsSupport end-user access issues and application publishingVirtualization & InfrastructureWork with VMware / Hyper-V virtual environmentsManage server provisioning, snapshots, and resource allocationCoordinate with network and storage teamsSecurity & ComplianceImplement security best practices and access controlsSupport audits and compliance requirementsMonitor system logs and alertsOperations & SupportHandle L2/L3 escalations from Service DeskParticipate in incident, problem, and change managementCreate and maintain system documentation and SOPsProvide on-call or shift support if required