Design e-commerce marketplace website

I represent a seed start-up in a developing African country that is looking to develop from scratch an online e-commerce marketplace where 1. Registered pharmaceutical products sold in the country are listed alongside their suppliers, respective prices / quantity limits, and supplier ratings 2. There is real-time inventory management where suppliers' inventory management systems (IMS) are able to automatically update the e-commerce marketplace with current inventory levels. Current common IMS used by suppliers include Quickbooks, Microsoft Access, Sage/Peachtree 3. Retailers accessing the marketplace website can compare prices/suppliers ratings for the best deal, select items into a cart and pay online 4. The ideal website would have a similar look and feel to [login to view URL] . Website designer requirements 1. It’s important the designer has prior experience building e-commerce marketplaces where multiple sellers host multiple products. They should be able to share a portfolio with examples of such websites