Balamurugan V

System Administrator with 4 years of experience in managing Windows endpoints, Windows/Linux servers and virtualization platforms. Skilled in server patching, OS upgrades, Active Directory, DNS, DHCP and incident handling in ITIL-based environments. Proven expertise in data-centre operations, endpoint security management, vulnerability remediation, and VMware administration with a focus on uptime, security, and operational efficiency.

System Administrator - Tata Consultancy Services (TCS) - Chennai, India

(2022-05 - 2026-05)

• Managed and supported large-scale enterprise Windows and Linux server infrastructure in a production environment.
• Provided L2 and L3 production support for 17K+ Windows servers, ensuring high availability, performance, and stability.
• Installed, configured, hardened, and troubleshot Windows Server 2016/2019/2022.
• Performed Windows patching using SCCM, WSUS and Manage Engine including patch deployment, compliance monitoring.
• Executed OS upgrades, in-place migrations and server provisioning with minimal downtime.
• Managed user, groups and computer objects with limited privilege in Active Directory.
• Supported and maintained DNS and DHCP services, ensuring optimized IP allocation and network availability.
• Performed vulnerability assessment and remediation using Nexpose across Windows and Linux servers.
• Troubleshot and maintained security and compliance tools such as Splunk, CrowdStrike, NTP, Qradar, Snow agents, Service Now, Manage Engine and Qualys.
• Installed, configured, and managed virtual machines using VMware vSphere and ESXi and patched ESXi through Life cycle Manager.
• Deployed, administered, and supported Horizon VDI infrastructure for enterprise users.
• Worked on windows failover clustering, performing node addition, cluster configuration, validation and troubleshooting to maintain High availability.
• Managed and supported Windows Endpoints and Endpoint security Management in Enterprise Environment.
• Supported Windows 10/11 desktop environments, Group Policy-based configurations, and system performance issues and troubleshot domain join issues, authentication failures.
• Performed daily health checks and proactive monitoring of VMware environments.
• Basic work exposure to Azure for VM administration with limited privilege.
• Maintained server inventory documentation for provisioning, decommissioning, capacity tracking for audit purposes.
• Handled P1/P2 major incidents, performed root cause analysis, and ensured minimal downtime.
• Performed hardware lifecycle management of provisioning, upgrades, decommissioning, and vendor coordination for replacements and repairs.
• Managed incidents, changes, and service requests through GHD service.
• Prepared POA and ITIL documentation, coordinated with OEM vendors, and ensured SLA adherence.

Support Engineer - Blue Yonder - Coimbatore, India

(2026-05)