System Administrator

Windows Active Directory (AD) Administration

• Administer and manage complex multi-domain, multi-forest AD environments.
• Plan, implement, and optimize Active Directory structure, Group Policies, DNS, DHCP, ADFS, and AD replication.
• Manage FSMO roles, AD trusts, and authentication/authorization escalations.
• Implement and maintain AD security standards, RBAC, OU structures, and delegated administration.
• Handle AD backup, recovery, and disaster recovery testing.

Patch Management

• Lead and manage the enterprise patching process for Windows servers and applications using WSUS/SCCM/Intune or equivalent tools.
• Develop patch management schedules ensuring minimal downtime and business disruption.
• Perform compliance checks and remediation of vulnerabilities identified through internal audits and external security advisories.
• Automate patch deployment and reporting to maintain 100% compliance levels.
• Coordinate with application owners, security teams, and business stakeholders to ensure successful patch rollout.

VMware Virtualization (L3 Support)

• Provide expert-level support for VMware vSphere, vCenter, ESXi, vSAN, and NSX environments.
• Troubleshoot and resolve complex issues related to HA/DRS, vMotion, snapshots, storage, and virtual networking.
• Perform capacity planning, performance tuning, and cluster optimization.
• Manage lifecycle upgrades and patching of VMware infrastructure.
• Support datacenter migration, consolidation, and DR strategy implementation.

Operational Excellence

• Act as a final escalation point for high-priority incidents and ensure quick resolution.
• Perform Root Cause Analysis (RCA) and implement permanent fixes for recurring issues.
• Participate in change advisory board (CAB) meetings and ensure all changes follow ITIL standards.
• Develop and maintain Standard Operating Procedures (SOPs), technical documentation, and knowledge base articles.
• Mentor L1/L2 teams and conduct periodic training sessions.
• Collaborate with OEMs (Microsoft, VMware, Security vendors) for critical issue resolution.