Sanjay Kumar
Mahato

•Install, configure, and administer Windows operating systems; manage user accounts, roles, and access rights across the organization. • Create and deploy virtual machines on VMware vCenter and Huawei Cloud for production and development environments. • Monitor infrastructure health and performance using Zabbix, CheckMK, and Grafana; proactively address alerts and anomalies. • Provide end-user IT support: hardware and software installation, troubleshooting, and incident resolution. • Maintain system and network documentation, and operational reports. Administering Linux servers (RHEL, Oracle Linux, SUSE, Ubuntu) and Windows Server environments. Handling Palo Alto PA-5220 firewall policies and site-to-site IPsec VPN configurations. Conducting security assessments using Shodan and resolving production incidents including DNS failures, firewall misconfigurations, and payment gateway timeouts. Automating inventory collection and VM performance reporting using PowerShell.

Hands-on server hardware management with HP/HPE servers using iLO. Physical infrastructure operations, monitoring with Zabbix and CheckMK, and supporting data center day-to-day operations. Performed Windows and Linux OS installation, updates, and software deployment on servers and end user machines. • Installed, configured, and maintained servers, workstations, switches, and peripheral hardware. • Managed user accounts, permissions, and access rights in accordance with IT policies. • Monitored data center uptime and performance; identified and resolved incidents in a timely manner. • Maintained structured cabling, rack management, and hardware inventory in the data center. • Supported senior engineers with network configuration, troubleshooting, and infrastructure maintenance.