I want someone with extensive Magento experience to build B2B and B2C Global Marketplace.

I want someone with extensive Magento experience to build B2B and B2C Global Marketplace. -Multi Vendor/seller & Multi Store site deployment(with child website(Chinese, Japanese, etc)). -Multi-Language & Multi-Currency Switcher. -Responsive Site and optimization to all type of mobile devices and tablet and desktop. Particularly we need to add some separate extensions or modules the following. -Vendor’s ALL Section (Back-end admin and front page) should be displayed in Korean( Install the Korean language pack). -I really want to build the Add Products Page such as Amazon when vendor/seller add a new product or category. -I want to build some modules page we can to translate Korean into English the product catalog. Not to create translation modules. Please see attachment file for more details. But if there are great alternative for it, I'll go along with your view. -Purchase order Customers can order products that are not post on our website directly. Purchase order is made by buyer putting in product name, purchase quantity, price, product url and other product details. We do our market research based on these data. And then, we send an invoice to the buyer. All the rest is the same. -We have three major delivery agencies, DHL, FEDEX, EMS. If you've got a good alternative, we will apply the best optimization solution for our website. -Limit the access from a certain country IP address. I will happily supply extensions, if it's required to buy them. If you interested please write a proposal along with the necessary extensions list to my contact chat on freelancer.com. If you have questions about this, or any other matter, please do not hesitate to contact me.