Experience on installation, configuration and maintenance of CentOS, Ubuntu and Red Hat servers. Administered and maintained Red Hat 6.x, 7.0, troubleshooting hardware, operating system, applications, and network and performance issues. Providing technical support to development team via helpdesk and over telephone. Installed and configured Samba (CIFS) to help in file sharing in the mixed environment. Installed, configured and managing FTP in chrooted environment. Installed and configured SSH for secured access on Red Hat, Centos & Ubuntu Linux systems. Implementing day to day task in Red Hat Centos Linux. Installation and configuration of software or packages in Red Hat, Centos and Ubuntu. (Using yum, rpm, apt-get, dpkg & tar.gz). Creation and managing users and groups in Linux. Monitoring and managing alert in Nagios. Installation and configuration of servers on AWS with EC2. Implementing AWS Infrastructure services like EC2, VPC, S3, ELB, EBS, RDS and CloudFront. AWS monitoring and notification.