Tapan Barman

System Administrator

Tata Consultancy Services • Full time

Jan 2020 - Present • 6 yrs 4 mos

Windows Server Management Install, configure, and provision Windows Servers Data center–level server management using Cisco UCS and KVM OS patching, antivirus operations, and system hardening for new builds Manage AD DS, GPO, DNS, DHCP, ADFS, WDS, and IIS Administer DFS, FSRM, file servers, and backup operations Troubleshoot advanced server, networking, and cluster issues PowerShell scripting to automate routine tasks Create SOPs, RCAs, and mentor L1/L2 teams Virtualization (VMware & Hyper-V) Build and manage Hyper-V environments including failover clustering VM provisioning and optimization using SCVMM Configure SCVMM console access, user roles, and permissions Implement failover clusters, replication, storage migration, and OS upgrades Coordinate escalations with OEMs (HP, Dell, Microsoft) Managed 30+ VMware ESXi hosts Migrated 250+ VMs with zero downtime using vMotion Migrated 1400+ VMs from VMware to Hyper-V using Zerto Active Directory Administration Manage AD infrastructure including FSMO roles, trusts, and replication Upgrade and migrate Domain Controllers to Windows Server 2022/2025 Design secure OU structures, permissions, and GPOs Perform DR operations, backup, restore, and AD health monitoring Ensure compliance with security and audit standards Infrastructure Support Operations Engineer for internal IT support (Kolkata region) Handle BAU tickets for enterprise users Manage devices and applications via MDM platforms (Microsoft Intune, Workspace ONE)