WordPress Systems Experts

Hi, we are an IT online systems company and already offering basic management of some client's WordPress sites (inside WordPress). Right now we have a couple of issues with a client's WP site, one is that suddenly the admin site is loading slow, and the other one is that there are some issues with media images, that are appearing from previous old cloned sites, server logs show this: --- cut here --- [login to view URL] - - [14/May/2016:10:47:57 +0000] "POST /wp-admin/[login to view URL] HTTP/1.1" 200 21 "[login to view URL]" "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:46.0) Gecko/20100101 Firefox/46.0" "-" 1577 0.241 "21" "0.240" "[login to view URL]" [login to view URL] - - [14/May/2016:10:47:57 +0000] "POST /wp-admin/[login to view URL] HTTP/1.1" 200 21 "[login to view URL]" "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:46.0) Gecko/20100101 Firefox/46.0" "-" 1577 0.179 "21" "0.179" "[login to view URL]" [login to view URL] - - [14/May/2016:10:47:57 +0000] "POST /wp-admin/[login to view URL] HTTP/1.1" 200 21 "[login to view URL]" "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:46.0) Gecko/20100101 Firefox/46.0" "-" 1577 0.217 "21" "0.216" "[login to view URL]" --- cut here --- Looking for WordPress experts with next skills: - Diagnose issues with loading time / broken or conflicting issues - Able to detect conflicts with core / plugins / themes - Able to diagnose issues with loading time - Able to detect any issues checking the logs (apache / nginx servers) - Able to work under pression - Works really fast - No need to think, just have a very large knowledge and experience - Able to suggest / tune linux server caching tools - Able to find best and faster way to make best pagespeed benchmark - Able to optimize a cpanel webserver or other standard hosting platforms, in case any client wants it for its current control panel. Tech must have tons of years of experience and must understand and fix issues in seconds, not in hours. We're providing a standard optimized platform, with nginx, php7, php-fpm and asynchronous servers. Please provide 1h bidding, we have a couple of issues to fix, but just want a price per hour. If we're satisfied with you, you will help us for the rest of the projects, managing more than 20 WP sites now and we will be managing more than 100 sites at the end of the year. If tech works fine, we will do more things and you will be part of our usual wordpress tasks in the future. Thanks.