Create a clean simple script for sellers to signup and upload a product feed, either xml csv. Each seller will have their own dashboard for displaying feed progress, and providing options to handle large feed uploads. it will display the final products uploaded. It needs simple common basic GUI.
First choice will be for developers with solid programing skills those highly capable of building a robust & scalable system perhaps creating an API to handle huge amounts of constant lookups quarries to the db. Please provide previous work examples, thanks.