Web based application running in Wordpress environment

Here is the basic stuff of what we need:
Web based application running in Wordpress environment
Must be proficient in PHP, Javascript, mySQL, CSS, JSON. HTTP 2.0 is a plus
JQuery, understanding of Wordpress, AJAX, help with managing multi-programmer code base (GITHub?) an asset
Eastern Standard Time working hours 9a-5pm at least 50%
English is essential