Position: Linux System Engineer
Category: Sysadmin
English level: intermediate
Years of experience: 7


I am working  a Support Engineer in a hosting company who owned a 6 locations with 400+ servers 
Knowledge: 
 - Protocols and Ports (FTP, SFTP/SSH, HTTP, HTTPS, IMAP, POP, SMTP).
 - Networking & DNS (Custom Nameservers, DNS Zone File and Record Management, Basic Networking Troubleshooting, Basic Network Configuration, IP Configuration, Spam Filtering (SpamAssassin), IP filtration on the switch level
- Linux (Cron/Anacron Configuration, CentOS, Debian, Ubuntu, RedHat Enterprise Linux, file permissions troubleshooting, file system management, high load management, kernel upgrades).
- WHM/cPanel: Configuration/Installation/Migration/Backup Configuration.
- Other panels: ISPmanager 4-6, VestaCP/HestiaCP, BrainyCP, aaPanel and so on.
- Software/Applications Assistance: Apache Configuration, Dovecot, EasyApache, Exim, Mail Server Troubleshooting (Exim, Postfix, Sendmail), MySQL (Setup, Configuration and Troubleshooting), Nginx Configuration, PHP (Management and Configuration), Rsync, Softaculous Installation, Webmail (Horde/Squirrelmail/Roundcube). Using and managment such stacks as Apache+Nginx, PHP-FPM+Nginx, Nginx + NodeJS.
- Monitoring: Zabbix, Nagios, Munin.
- Setup and debug different popular CMS (Wordpress, Joomla, ModX, Bitrix, etc.)
-VPN service and settings (OpenVPN, IKEv2, PPTP, L2TP/Ipsec for different OS (Linux, Windows, iOS, Android)