Administration of servers (Linux servers: CentOS, Debian, Red Hat, Suse, etc)
Administration of VPS Servers (OS install, setup, configuration, security, management etc)
Configurations & Maintenance of the following Linux services: Mail (qmail, exim, postfix), MySQL, Apache, DNS (bind), iptables firewall, haproxy, nginx,
Server monitoring: Zabbix, Nagios, Cacti
Server Virtualization: vmWare, KVM, OpenNebula, Docker
Load balancing: Haproxy, NGINX
Caching: NGINX
Install/Configure/Maintain/Admin linux services & applications: Apache, PHP, PhpMyAdmin, MySQL, Email server config (support for SPF, DKIM, DMARC, rDNS)
Install/Configure/Administration of Virtualmin/Webmin
Website/APP migration: Wordpress, Joomla, Magento, ODOO (any version), CMS, Moodle etc