E-Commerce Site with Payment Gateway

I’m looking for a web developer who can take my online store from concept to launch. The core must-have is a smooth, fully secure payment gateway. Beyond that, I’m flexible on the underlying platform—,... (Budget: $250 - $750 USD, Jobs: Content Management System (CMS), eCommerce, Payment Gateway Integration, SEO, User Interface / IA, Web Development, Website Design, Website Optimization)