Hi! I'm system administrator. Worked with Debian, Ubuntu, Centos, Fedora, Freebsd, Windows servers 2003 / 2008 (R2) / 2012 (R2).
As for yours - I can provide apache, cpanel, mysql, ssh, ftp (proftpd, vsftpd), email (dovecot, postfix, exim) configurations and checks, monitoring tools install and configuration for early problem notifications and reporting.