Web Application Redesign

Hi there, We are looking for a web designer with experience in user interfaces to assist us with a redesign of our online web application. The application is currently in a beta testing phase, but has been completely developed using a template in order to establish the functionality of the website. We are now in a position where we would like to bring the application out of beta, but feel that we need a new, cleaner and more intuitive design to make the application a success. To clarify, this is a browser based web application for the PC/Laptop market. We would also love to expand with a multi-platform mobile device app in the future - so if this is something you are also familiar with then even better! What we need is someone who has experience in designing applications and/or interfaces. We would like you to look at our application and make suggestions on how the design and the flow of data and processes can be improved. There are elements of the current design that we like (colour scheme, etc) but I feel that it's likely we may need to simply start again with the design based on your feedback and suggestions. As well as your important input, we would need you to actually design the new website and ultimately code this design into workable and usable HTML/CSS. If there are elements that may require specific user interface development (such as Javascript/jQuery/AJAX implementations) it would be advantageous if you could also assist with the implementation and possibly development of those. In a perfect world, we would be left with code we can pass on to our developer to integrate via PHP and MySQL. Of course, we're flexible and negotiable on these points. Thank you very much for your time, and I look forward to hearing from you.