I have more than 15 years' experience teaching computer in school and beside that as a System & Network Administrator especially in Linux (CentOS, ubuntu or debian) at computer laboratory of school. As freelancer in Indonesia: I have more than 4 years' experience too for developing Debian & Ubuntu Server CD for school in Indonesia especially for Technical & Computer Networking. My expertise: - OS (CentOS, ubuntu) - AWS (EC2, RDS, 53 Route) - DNS Server (BIND9) - E-Mail Server (Postfix, hmailserver, dovecot, spamassassin, clamav, DKIM, SPF, IP Rotation) - Web Server (Apache, Tomcat) - Database Server (MySQL, MariaDB) - install SSL into Apache, Nginx, Tomcat, Bitnami, hmailserver, Postfix, cPanel - Secure Server (fail2ban, iptables) - Virtualization (VirtualBox, Proxmox) - Installation/Migrate/Moving/Upgrade/Recovery Database & Linux Server - Odoo (Setup SaaS) I'm a hard worker, I never give up although I get problem because every problem always has a solution.