Build a Auction Website for Domain, Website and App

I need expert to build a site with fully Search Engine Optimized. Professional quality and rich featured for domain, website and app marketplace where people can bid, buy or sell domain names or website, similar to [login to view URL], [login to view URL], flippa.com. The site shall have multiple payment gateways and integrated escrow , Facebook and Twitter integration, multiple currency support, custom fields, rating system. The site shall have responsive design for mobile phones and tablets. The site shall come with a comprehensive back-end control panel, for the auction posters as well as for the auction bidders, with associated account to track sales, offers and bids, search engine optimized and ready to monetize. Auction categories can be customized for any categories and TLDs. Multilanguage site. As any website, there are many requirements and features to be added, website shall be completed and successfully tested before handover.