Create Interactive Web App from Excel Spreadsheet

I'm seeing a guru level, rockstar level PHP, User Interface programmer to create an interactive web version of an excel spreadsheet. I will provide much of the templates and all graphics. Site needs to be ajax (interactive without page refresh) using the latest techniques. -5+ Years PHP -Expert in HTML, CSS -Expert in Javascript (ajax) -Solid understanding of linux and some administration. -Expert in MySQL Will incorporate some ecommerce elements that include a freemium model. -X Day Trial -Price/month after that -Possible free version with ads -Possible pricing thresholds based on a quantitative element. Programmer must be nimble - meaning be able to solve things fairly quickly, but object-oriented such that code re-use is maximized. Will share complete details to interested candidates. You can feel free to provide a bid after that.