• Experience with Linux servers with virtualized environments.• Responsible for managing disk space by creating physical volumes, volume groups, logical volumes (LVM) and file systems as per the need.• Building and configuring servers using PXE boot with kick start. • Installing, updating, and maintaining software on Linux systems with yum and rpm to maintain secure environment.• Tuned the kernel parameters provided by kernel engineers based on the application/ database requirement.• Configured RAID (0, 1, 5 & 6) for multiple Red Hat Linux Servers for increased performance and redundancy.• Experienced in deploying virtual machines using clones and templates on VMware ESXi and monitoring said servers through vSphere and vCenter.• Create, extend, reduce and administration of Logical Volume Manager (LVM) in RHEL environment.• Writing shell scripts to automate sys admin tasks.• Scheduled Cronjobs to automate daily tasks.• Performing ongoing performance tuning, hardware upgrades, and resource optimization as required, Configuring CPU, memory, and disk partitions as required. • Experience working with ticketing tools (ServiceNow).• Experience about Jenkins, CI, CD pipeline. • Provisioning EC2, S3, EBS, EFS and ELB on the recommendations from AWS team.• Built S3 buckets and managed policies for S3 buckets and used S3 bucket and Glacier for storage and backup on AWS.• Experience in GitHub.• Experience in creating inventory, job templates and scheduling jobs using Ansible Tower.• Patched systems using ansible, and ad-hoc commands for quick status check• Installed, Deployed Red Hat Enterprise Linux6.x/7.x/8.x, Centos and installation of packages and patches for Red Hat Linux servers.• Worked with docker volume, creating volume, and mounting them on different containers.• Created docker customized images leveraging Docker file/ Docker Compose• Instantiated containers from images downloaded from internal registries/repositories.

• Performing Linux configuration changes and software installations.• Provide support that can resolve incident tickets and change requests with RHEL/6/7 and Linux related issues.• Tuned the kernel parameters provided by kernel engineers based on the application/ database requirement and changing the user limits.• Remediating large number of ESM violations to keep computing environment in compliant to GIS mandated baselines.• Installation of patches and packages using RPM and YUM in RedHat Linux.• Creating and removing the symbolic links. • Experience in the networking protocol TCP/IP, FTP, TFTP, NFS, DHCP, NTP, HTTP and so on.• Experienced in deploying virtual machines using clones and templates on VMware ESXi and monitoring said servers through vSphere and vCenter.• Monitoring system activities like CPU spikes, memory issues, disk problems, Network issues.• Creating, extending, reducing and administrating of Logical Volume Manager (LVM) in RHEL environment.• User Management and Administration.• File system management.• In depth experience with IP networking (TCP/IP packet analysis, DNS,DHCP, etc.)• Monitoring & troubleshooting with performance related issues.• RAID Configuration.• Responsible for installing, configuring, and maintaining RedHat Linux operating systems.• Working on Security related projects such as Vulnerability Management and remediation which brought tremendous improvements in securing our computing environment.• Working closely with other technical groups.• Taking ownership of problems/issues/tickets until resolution.• Experience managing servers remotely in a distributed environment.• Good Hand-on experience in writing Ansible playbooks and automated the day-to-day tasks for users as part of self-service jobs.• Deployed applications leveraging various ansible module ensuring persistent services.• Installing, updating, and maintaining software on Linux systems with yum and rpm to maintain secure environment.

• Following corporate procedures, creating/modifying/closing accounts for Linux/Windows systems using centralized authentication (NIS, LDAP) Systems and shadow files. Resolving tickets related to logon issues and resetting password frequently. • Building and configuring servers using PXE boot with kick start. • Setting up and configuring NFS server and clients.• Installing, updating, and maintaining software on Linux systems with yum and rpm to maintain secure environment.• Setting up NIS domains, which involves configuring YP servers and YPBIND clients.• Responding to alerts generated by Nagios. • Performance tuning on slow systems. • Troubleshooting and maintaining TCP/IP, Apache HTTP/S, SMTP, and DNS applications.• Performing NIC bonding on Linux Systems for redundancy.• Building and automating VMWare operations on ESXI 5.5 with V center, V motion, vSphere.• Creating VM guest hosts, cloning, creating templates and moving machines with Vmotion• Systems administration including operating system installation and upgrades.• Installing different versions of Linux in VM and BM environment• Configured attached storage – both internal SCSI RAID and DELL MD3000 storage. • Creating new RAIDS (0, 1, 5, 6, and 10) and creating logical volumes, file systems and directory structures as requested. • Creating LVMs, extending volumes on production and dev environments.• Installed, Deployed Red Hat Enterprise Linux6.x/7.x, Centos and installation of packages and patches for Red Hat Linux servers.• Having Good knowledge about Jenkins, CI, CD pipeline.• Experience in creating inventory, job templates and scheduling jobs using Ansible Tower.• Having Good knowledge/understanding of containerization platforms like Docker.• Providing support as required during normal business hours as well as after hours.• Perform Linux operating system installation, upgrades, patching, tuning, and troubleshooting.• Configuring Dell and HP servers (R-series and ProLiant)