Hello,
I am expert Prestashop developer, have been working for last 8 years. Also having excellent experience with Database, Development/Customization, Modules, addons, templates, , extensions, 3rd party tools, Designs, PHP, HTML, HTML5, jquery, API Integration, payment gateways.
I can help you to create a small module in Prestashop 1.7 to import and then update products in the DB from the APIs as you need.
Queries:
1)Do you have any requirements document that you can share?
2) Can we have a quick chat on this so that we can be more clear and understand the project better?
Thanks