API's

My name is Gabriel, I'm the technical operations lead for ---------- .

For the beginning, I would like you to build APIs for:
Amazon - shoes
Amazon - clothing,accessories,bags
Jet - shoes, clothing, accessories, bags
Walmart - shoes, clothing, accessories, bags
Google - shoes, clothing, accessories, bags
What we have:

APIs already built for 1.3.4 on a MSSQL database in C#
Accounts with Amazon, Jet, Walmart, Google, Linux server, Windows server.

What we need:

APIs for 1,2,3, 4 and 5 on a MySQL database in PHP

About moving API (merchant sync program) to mysql:

1st option (easiest) is to translate sprocs from mssql to mysql.
2nd option is to rewrite program itself in php and connect it with mysql natively. I can help if some of the logic if is not straightforward for you.

How long it will take per project?
How much it will cost per project?

Once we have "the ball rolling" we will need more APIs and ---------- (PHP, Laravel, mysql) website design changes and add ons and other projects.

Thank you,

Gabriel