• Account Management – User Creation/Deletion/account lock/Unlock and handling user access issues.• Performance Tuning/Monitoring of servers by top & sar command.• Backing Up Volumes Performance & files using Snapshots, tar etc.• File system management. Killing Process on various servers.• Access and ownership management in O365 console.• LVM Managing Disk Storage.• Handling O365 Services like Exchange Online, Skype Online.• Working with O365 Security and Compliance centre.• Handling Active Directory issue.• Performed Patching activity for the Production as well as for the non -production servers.• Troubleshooting any issues varying from installation of Linux/UNIX OS to working on LVM, Server Health, User creation and removal, managing Samba.• Experience on LPAR to manage the system with specified serial number.• Worked on vscsi disk on a VIO client to determine what adapter and disk are mapped to the client on the VIO server.• Install and configure AIX operating systems and servers.• Support AIX OS to run various applications.• Experience working on REDHAT Satellite server. Experience using kick start advanced installation.• Configure AIX HACMP Power HA, perform configure NIM backups and restore operations• Disaster Recovery planning of production server.• Hands on working on Network File Sharing, Samba Sharing and implementation of Web Servers Like Apache (basic knowledge).• Hands on experience on patching SUSE and Red Hat,HP UNIX & RHEL 7. • Upgrading patches to remove vulnerabilities via Bladelogic tool and Maintain and Upgrade AIX OS 4 Install and test AIX OS patches.• Develop procedures for aix security management. Plan and coordinate install testing maintenance of aix software.