Build me a eCommerce website (BigCommerce platform)

I need an eCommerce website that will use BigCommerce. There are some APIs that need to be integrated. The shopping cart needs to be simple and effective, in order to give buyer the best experience possible.
Abandon cart options and add items options at the checkout are a must.
An effective search tool within the website is also important.
We have a very dynamic list of products, so my team needs to be able to upload new pictures and create new listings as well as scrapping old ones.
Need a tool to build a client’s list with profiles per shop preferences, region, etc.