Python Development, API Integrations and API Development

I need an experienced candidate or company, who are: 1. Reliable, hard working and vastly experienced 2. Can show their past work (ACTUAL) 3. Can share their feedbacks from previous customers 4. Can provide references from their previous customers PEOPLE WHO DO NOT HAVE THESE ATTRIBUTES PLEASE DO NOT BID. Project Description: We have an in-house built system/open source system (written in pythoin) that will serve as the core of the business. We have some Items in our system that we need to list on multiple marketplaces like Amazon, Ebay, Rakuten, Sears etc. So wee need you to build an API which our system can call and then the API should be able to list the items on these marketplaces using individual API's of each marketplace. After listing the another API needed to be built which will download the orders received in the marketplace to our system. Third, API will upload tracking information against the order from our system to these marketplaces. Further details will be discussed with the short listed candidates.