Development of the “Big Sales” platform

The essence of the project is as follows:
It was necessary to create a site that had the ability to integrate with large API trading sites (such as Rozetka, Prom, Bigl, Zakupka, etc.). The user is registered on the Big Sales platform, placing his goods on the platform, thanks to the integration of his goods falls on the above listed marketplaces, when the order is received, he also comes to the personal office to a particular user.