Wix Expert Needed

Hello. We are looking for someone who is super familiar with Wix. Not to build us a web site (we are already working on that) but someone who is familiar with all the technical aspects / layout idiosyncrasies / opportunities / issues / widgets / SEO tools in Wix. TO BE CLEAR: We are not seeking someone to 'do our web site' - but someone who works with Wix all the time and really know it inside out to help us check / correct / add certain functions such as client areas etc. It is really important that anyone who applies is specifically a Wix Expert. Thanks.