Add/Create Product Listings

Hi, I need an expert to add/create my online stores listings (Amazon/Walmart).

On your proposal answer these Questions, otherwise your bid will not be taken into consideration:

1. Do you work with both platforms Amazon/Walmart?

2. If I give you a product to create a listing and the same product is already listed on that platform by another seller, how do you proceed?

If you Do Not have experience creating listings Do Not Apply.
If you Do Not have experience with Amazon/Walmart Seller Store Do not Apply.
If you Do Not answer the questions posted here, Do not apply.

This is a long term job.