Koushikan R

Professional Experience

Windows Server Administrator
Tata Communications –
February 2023 – Present

• Administer and maintain Windows Server infrastructure (2012, 2016, 2019, 2022), ensuring high availability, optimal performance, and system security.
• Manage Active Directory roles and configurations, including user/group creations, DNS record management, and role installations.
• Perform in-place upgrades from Windows Server 2016 to 2019 and 2022, ensuring minimal disruption and successful transitions.
• Handle cluster role installations to improve server availability and fault tolerance.
• Troubleshoot complex issues including NLA errors, RDP connectivity problems, and BSOD (Blue Screen of Death) events.
• Manage Citrix infrastructure, including version upgrades, application creations, and Virtual Desktop Infrastructure (VDI) server management.
• Administer server patching for Windows Server versions 2016, 2019, and 2022, including troubleshooting patch issues using DISM and CBS log analysis.
• Perform physical server migrations, firmware upgrades, and driver updates to ensure hardware compatibility and server stability.
• Participated DR (Disaster Recovery) drill activities to ensure operational readiness in the event of a system failure.
• Install and manage RDS (Remote Desktop Services) licenses to ensure proper user access and licensing compliance.
• Handle daily antivirus management (Symantec), including scheduling scans and performing version upgrades.
• Developed and maintained strong relationships with clients, understanding their needs and delivering custom solutions.

System Engineer (Contractor)
Cognizant (via Vertex Solutions)
December 2020 – September 2021

• Managed Active Directory (AD) user creation and password reset requests, ensuring smooth user access to company resources.
• Administered basic server configurations and daily maintenance to ensure continuous operation.