Monthly system sys admin required (part time) - php, nginx, centos, vesta, php-fpm, linux servers, redis, varnish by domainmanuk

We need a system admin to replace our current guy. We currently have 2 large dedicated servers - 1 is a database server that stores large databases and the other is used for WP websites and code igniter sites... (Budget: $250 - $750 USD, Jobs: Linux, Nginx, PHP, System Admin, Varnish Cache)