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 Skills

• Windows & 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 Voice
• Backup & 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.

Requirements

• Bachelor'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.