E-Commerce Site development

We require a developer to help us develop our new shopping portal site with extra features. We would like to copy this site [login to view URL] Looking for people with experience in: 1) Merchant Payment Integration 2) PHP 3) Apache Web Server 4) E-Commerce Sites 5) OSCommerce,ZenCart,Opencart other opensource software for ecommerce 6) SEO 7) XML Feeds 8) MYSQL After selection , I will give the details of the site etc. Thanks