Redesign parts of webpages, code new functionalities & fix existing bugs.

Hi, We have a responsive website built with most of the functionality done using PHP, HTML, AJAX and MySQL for the DB. The website's core idea is to support videos from Youtube, enable users to interact and support each user's profile page, so we definitely need someone who can write good design for the webpages and enhance the current UI to a better looking one in some of the required pages. Also we need to fix some of the existing bugs(mostly UI related, but a few functionalities too). It is important that you understand the existing code and work on it to add functionalities above it. The code is quite simply written and understandable for experienced coders, so I would suggest novice developers to kindly not bid on the project. We will provide documentation for the existing functionalities. Must Required skill set: PHP, MySQL, AJAX, Git, HTML5 and definitely good UI skills. NOTE: The freelancer needs to push code to our Git repository regularly where we will pull it from to make sure the work is in good progress. He should test and make sure it is bug free. Inefficient code will be rejected. Code should definitely be fast and quick in getting results. We welcome everyone for the project and select a freelance solely based on their skillset and our budget estimates. Show us your past work and it will help us decide your capability much quicker. Thank You.