Senior System Administrator ( IT )

Job Summary We are looking for a hands-on System Administrator to manage enterprise infrastructure and support modernization initiatives across Microsoft, Dell, VMware/Omnissa, Cloud, Database, Cisco and AI infrastructure.Key Responsibilities & Technical SkillsWindows & Linux: Administration of Windows/Linux servers, Active Directory, DNS, DHCP, GPO, patching, monitoring and troubleshooting.Microsoft 365 & Cloud: Strong hands-on experience with Entra ID, Intune, Exchange Online and SharePoint Online. Support Azure services, hybrid identity, Microsoft 365 administration and cloud migration initiatives.Microsoft Security: MFA, Conditional Access, Defender, device compliance, endpoint security and privileged access controls.Server/Storage/ Data Domain infrastructure.Virtualization & VDI administration.Network ad VoiceBackup & DR: Backup infrastructure, disaster recovery, replication, capacity planning and DR testing.Automation & Modern Infrastructure: PowerShell scripting, API-based automation, infrastructure monitoring and operational process automation.AI Infrastructure: Support GPU-enabled infrastructure, AI/ML workloads, virtualization for AI and enterprise AI platform deployments.Cybersecurity & Compliance: Vulnerability remediation, system hardening, security monitoring, audit support and implementation of infrastructure security controls.Infrastructure Projects: Participate in technology refresh, cloud migration, system upgrades, integrations and infrastructure modernization projects.Maintain technical documentation, SOPs, architecture diagrams and coordinate with vendors and internal teams.RequirementsBachelor's degree in IT, Computer Science, Engineering or equivalent.8+ years of enterprise IT infrastructure experience.Hands-on experience in mission-critical or environments is an advantage.Knowledge of Azure, PowerShell, cybersecurity, automation and AI infrastructure is highly desirable.Willingness to participate in 24×7 support/on-call activities when required.