Bala Hari

Infrastructure & Cloud Engineer with nearly 10 years of experience supporting enterprise environments across Windows Server, Linux, Nutanix, VMware, SCCM, WSUS, and Microsoft Azure. Currently working as a Technology Services Analyst at RR Donnelley, managing infrastructure operations, Azure environment support, and production issue resolution across front-end and back-end systems. Hands-on experience in managing Nutanix HCI clusters, including AOS upgrades, lifecycle management (LCM), high availability (HA), and data center infrastructure stability.

Involved in server lifecycle management, including provisioning, maintenance, migration support, and decommissioning across enterprise environments. Strong exposure to incident, change, and problem management (ITIL), ensuring SLA adherence and timely resolution of production issues. Known for strong troubleshooting ability, ownership in operations, and effective collaboration with cross-functional teams to maintain stable and secure environments.

Tech Service Analyst - RR Donnelley - Chennai

(2025-03)

• Managed BAU Operations, handling Sev-3 & 1 Incidents, 1000+ Zabbix Alerts, ISRs, and Change Tickets within SLA.
• Performed Windows Server (Troubleshooting, Escalation, Resolution) ensuring High Availability.
• Executed Change Management with Zero SLA Breach and minimal business impact.
• Protect against vulnerabilities in Windows Server (Request Filtering IP Restrictions)
• Configure Websites, applications pools, and Virtual Directories
• Install IIS on Windows Servers Via Server Managers in AD
• Conducted Root Cause Analysis (RCA) and implemented CAPA to prevent recurring issues.
• Monitor Server Health using Performance Monitor and Windows Server IIS Logs
• Administered Nutanix Infrastructure (AOS Upgrades, HA, VM Validation, Cluster Operations).
• Managed Server Lifecycle (Provisioning, Migration, Decommissioning) across Sri Lanka & Polygon Data Centers.
• Performed Disaster Recovery (DR) and Preventive Maintenance (PM) with Zero Deviation.
• Handled Backup & Recovery using Commvault, resolving DDP Partition Issues.
• Collaborated with Dell, NetApp, and Network Teams for Hardware, Storage, and Access Issues.
• Implemented Security & Access Controls (Roles, VLANs, Rapid7 Vulnerability Fixes).
• Supported Data Center Operations (Power Shutdown & Restoration Activities).
• Installed and configured Windows Server 2016 to 2025
• Performed Windows Server Monitoring & Optimization using Zabbix (File Purge, Alert Validation).
• Maintained Documentation, Audit Compliance, and Knowledge Sharing.

Technical Support Executive - Opseazy - Chennai

(2023-02 - 2025-03)

• Administered and managed Active Directory Domain Services (AD DS) including user accounts, groups, organizational units, and Group Policy configurations.
• Designed and implemented Windows Server Access Management strategies to enhance security and streamline access control.
• Implemented Single Sign-On (SSO) solutions for seamless and secure user authentication across multiple applications.
• Managed and maintained Windows Server environments (2008/2012/2016/2025) ensuring high availability and performance.
• Troubleshot and resolved issues related to Active Directory, DNS, DHCP, and Windows Server infrastructure to minimize downtime.
• Managed Dell PowerEdge R740 servers and handled physical infrastructure operations.
• Maintained documentation, SOPs, and audit logs for compliance and operational readiness
• Collaborated with cross-functional teams for incident resolution and infrastructure support

Support Engineer - Cobra Legal Solutions - Chennai

(2021-03 - 2023-01)

• Troubleshoot and resolve complex issues across VMware ESXi, Windows Server, Active Directory, and physical server infrastructure to ensure maximum system availability and performance.
• Performed patch management and security updates across servers and enterprise applications.
• Executed Exchange Server to Office 365 migrations including cutover, minimal hybrid, and full hybrid deployments.
• Deployed and managed SCCM and SCOM for system monitoring, patching, and configuration management.
• Implemented OS deployment (OSD) and imaging solutions using MDT for desktops, laptops, and tablets.
• Supported and maintained enterprise network environments (LAN/WAN) across Windows 10 and Windows 11 systems.
• Diagnosed and resolved VMware performance issues, applying tuning techniques to optimize system efficiency.
• Maintained and enforced directory structures, organizational units (OUs), and Group Policies in alignment with organizational standards.
• Worked independently with minimal supervision, ensuring timely resolution of incidents and service requests.

Support Executive - Buy happy Marketing LLP - Chennai

(2018-03 - 2019-11)

• Managed compute resources (CPU, memory, storage, network) to ensure optimal performance and availability
• Maintained Windows Server environments, ensuring security, stability, and high uptime
• Configured and managed DNS services for domain-joined systems
• Deployed and managed Virtual Machines, including migration and disaster recovery (DR)
• Monitored Active Directory replication, domain controllers, and overall AD health
• Administered Active Directory (Users, Groups, OUs, GPOs) for centralized access control
• Implemented security hardening, access controls, and vulnerability mitigation
• Performed patch management and server updates ensuring compliance and system security
• Supported backup and recovery operations to maintain data integrity and availability
• Monitored system performance and health, proactively reducing downtime
• Troubleshot complex infrastructure and performance issues across environments
• Optimized resource utilization, improving efficiency and system reliability

Executive Engineer - Cloud Zone IT Services - Chennai

(2017-05 - 2018-02)

• Managed compute resources (CPU, memory, storage, network) to ensure optimal performance and efficiency
• Maintained Windows Server environments, ensuring security, stability, and high availability
• Configured and managed DNS services for domain-joined systems
• Implemented security controls and hardening measures to prevent unauthorized access
• Deployed and managed Virtual Machines, including migration and disaster recovery (DR)
• Monitored Active Directory (AD) health, replication, and domain controller performance
• Administered Active Directory (Users, Groups, OUs, GPOs) for centralized access control
• Troubleshot complex infrastructure issues, improving system reliability
• Executed patch management and system updates to maintain compliance and security
• Optimized resource utilization and system performance to enhance efficiency

Associate Engineer - HCL Info Systems - Chennai

(2013-08 - 2017-05)

• Performed troubleshooting and issue resolution for software, hardware, and networking configurations
• Managed incident tickets via ManageEngine ServiceDesk, ensuring timely resolution based on priority (SLA-driven)
• Installed and maintained Active Directory Domain Services (AD DS) on Windows Server (2003/2008/2012/2016/2019)
• Administered Active Directory (Users, Groups, OUs) for centralized access management
• Provided end-user support (phone/email) for technical issues across software, hardware, and networking
• Coordinated with vendors (HP, Dell) for hardware support, call logging, and issue resolution
• Implemented security patches and updates for servers, client systems, and antivirus solutions
• Monitored network infrastructure (servers, switches) using PRTG and Ping tools
• Supported multiple operating systems (Windows, macOS, Linux) including installation, updates, and patching
• Managed and troubleshot email systems, collaboration tools, and video conferencing platforms
• Provided remote support using remote desktop tools for distributed users
• Maintained IT asset inventory (devices, licenses, peripherals) and documentation
• Collaborated with cross-functional teams and senior engineers to resolve issues and achieve project goals
• Performed Windows Server administration and access management across enterprise environments
• Handled Active Directory troubleshooting, replication, and issue resolution

SSLC - Puducherry Board of Secondary Education

BBA - Annamalai University

PGDMA - Welingkar University