•Servers Installation, Configuration, Troubleshooting, Maintaining stability and Migration for FreeBSD, Centos and Ubuntu.•Installing, Configuring and Troubleshooting Apache, Nginx, MySQL, PHP-FPM, Jails, Virtual hosts, Chroot and KVM.•Installing, Configuring and Troubleshooting OpenERP, Odoo and Postgresql. •Installing and upgrading any php, python web applications ( phpMyAdmin, Phplist, Magento, Moodle, Sugarcrm, VtigerCRM, Zabbix, dotProject, OpenCart, PhotoStore, Wordpress, ResourceSpace, Limesurvey, Redmine, ... etc).•Setup, Launching and maintaining websites. •Install and manage cpanel, plesk panel.•Installing, creating, upgrading, backup and restore Subversion repositories.•Backup jails using Rsync, rsnapshot utility.•MySQL Database backup and restore.•Postgresql Database backup and restore.•Installing proftp and pureftp server and creating ftp accounts for virtual hosts using Mysql database.•Configuring PacketFilter PF firewall.•Setting up samba configuration.•Installing, configuring and managing Nagois and Sophos anti-virus on a CentOS.•Mail server and email configuration and administration.•Evaluate and install networking software, operating system software and software applications.•Install, maintain, troubleshoot and upgrade Web-server hardware and software.•Implement network traffic and security monitoring software, and optimize server performance.•Perform data backups and disaster recovery operations.•Conduct tests and perform security and quality controls.•Perform shell scripting or other basic scripting tasks