Setup and maintenance of ubuntu web servers on vps (linode, azure, amazon ec2 + s3 + rds + route 53, dedicated in-house servers or other hosting providers if required level of access is provided): - install and setup of ubuntu (12 ,14, 16) - install and setup of mysql/apache/php - install of package dependencies - downgrade and upgrade modules and their dependencies - setup of mail server + maintenance (accounts, block/allow, integration with 3rd parties, webmail etc) - sftp access with or without key - chroot jail - setting up various "sensors" (disk space, cpu etc) for alerts - block / allow web traffic or other firewall rules - cronjobs - regular file/db backups (ftp, local storage or cloud - amazon s3) - recovery of broken mysql database (it really depends on how damaged the files are) - recovery of either entire database or specific tables from backups - etc