I have 5 years of experience as System Administrator.
Web Hosting Expertise:-
WHM/Cpanel, Plesk Panel, Zpanel, Direct admin, Virtualmin, ispconfig panel,
Server Setup and Management with security and optimization,Server Migration, SSL Installation , NGINX and apache, Bind DNS, Postfix, Exim, etc.
CentOS, Ubuntu, Debian, Redhet, Fedora
Cloud services such as Amazon Web Services, Linode, Digital ocean, Google cloud etc....
Email Campaign Managers:-
Interspire, Mailwizz, Mautic, Sendy, Oempro, SendGrid, Mailgun, Mailchimp, Zoho Campaign, AWS SES, etc..
UNIX/LINUX iptables, CSF, Firewalld