Desarrollar software

We do sell on ebay, our inventory items available on Amazon FBA. We need a script in PHP, that automatically send the order to our amazon FBA account for processing when we do have a sale on ebay. Items will be related each other with the same "SKU", so there wont be a problem by matching it. Also, that updates the tracking number provided for Amazon on ebay directly when available. Main page also have to show our actual available amazon FBA inventory list (SKU, Name, Quantity, date listed) We need someone with previousl experience, developing with Amazon Seller's API Thank you