HTML, CSS, Jquery, PHP and MySQL e-commerce project

We are a UK based company seeking a freelance developer to work on a PHP and MySQL based multi-tier e-commerce project. The project is part completed and we would estimate approximately 20 to 30 hours of work remaining for an experienced developer. Requirements 1. Extensive experience of HTML and CSS design 2. Extensive experience of PHP 3. Extensive experience of MySQL including database optimisation 4. Experience of creating e-commerce websites including financial data, sales tax, etc 5. Fluent English 6. Live examples of previous work The project working on an existing system which allows photographers to upload photographs for sale online. The interface for uploading photographs is complete but the frontend store needs to rebuilt. This is a multi tier e-commerce system where each user as their own storefront but using the same payment gateways. Funds are then 'remitted' to clients.