• Provided 24*7 end to end technical support to 17000 + Linux servers being hosted in Data Center globally.• Working on ITIL, Change Management, Problem Management, Incident Management.• Experience in diagnosis and troubleshooting of production Linux server support.• Daily troubleshooting of networking, user management, patches/packages related issues with Linux and Resolving all the OS related issues after patching. (e.g.: filesystems, mount points, booting issues etc.). • Quarterly Patch upgrade on Linux servers. Coordinating with application and database teams, opening and scheduling CRs’ and perform patching through YUM & BladeLogic (TrueSight Server Automation).• Performances monitoring using utilities like TOP, PS, kill etc. Monitoring servers' disk, memory and swap space utilization.• Troubleshooting boot time complexities.• LVM creation, resizing and management.• Expertise in handling Linux based NFS, bind (DNS), Postfix, FTP, NTP Services.• Linux Flavors: Redhat (RHEL-6.x,7.x,8.x & 9.x).• Basic task of storage at client end like LUN discovery and LV management.• VM Creation, OS Installation through VM (Using Template, ISO image and through Kickstart).• Job Scheduling and automation using cron and at.• Creation/Management of templates for easy deployment.• Handling hardware and OS related cases with REDHAT, HPE and IBM providing them SOS report, VMCORE, AHS logs to analysis and fix the issues.• Sever Type: VMware and Physical machines.