Responsible for coordinating the construction, maintenance, and expansion of an organization’s computer systems. As a Linux System admin primary responsibility includes building of new servers which includes rack mounting, installation of OS, configuring of various OS-native and third party tools, securing of OS, job scheduling. Installation, Maintenance, administration and troubleshooting of Red Hat Enterprise Linux 6/7 and Debian systems. Deployed Puppet, Puppet dashboard, and Puppet DB for configuration management of existing infrastructure Expertise in system monitoring and software installation tools including RPM and YUM Remote monitoring and management of server hardware. Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring Setup internet load balancing on multiple NIC, Firewall, Port forwarding, IP routing using IPTABLES. Experienced in iSCSI, NFS storage and RAID concept. Experiences in FTP, DHCP, SAMBA users setup/troubleshooting. Experienced in creating, mounting file systems and recovering file system errors. Experience on Installation of VMware ESX / XENServer and migration of VM's from one host to another host and also from one data storage to another data storage. XENServer Resource pooling and configuring high Availability Installing KVM Kernel Virtual Machine, configuring KVM Virtual Networks Working on Amazon web services to create AWS instances with S3 storage and EBS storage. Installed, configured and administering Nagios based monitoring server. Experience with Nagios, Check-mk and SNMP monitoring. Perform daily system monitoring, verifying the integrity and availability of all hardware, server resources, systems and key processes, reviewing system and application logs, and verifying completion of scheduled jobs such as backups. Working on FreeNas using different file sharing Protocol. Working on Active Directory Server configure with LDAP. Working on Mirotik Firewall. working knowledge of Docker Working Knowledge of basic programming languages like C++, Python, Assembly and shell scripting. Documenting technical tasks in the most professional way by attaching the screenshots along with the steps