CasperJs Purchase Automation

I would like to start immediately with this project. This project uses CasperJs and is to create an automated purchasing program for buying items from a major US retail website. The developer must understand and have experience with asynchronous development patterns. I need a successful single purchase coded using CasperJs and will supply all items required to complete the purchase. The purchase algorithm are explicitly as follows: Login using username and password Clear shopping cart items Clear address book of addresses (except for billing address if present) Add shipping address to address book Verify address is correct (use recommended address) Add billing address to address book (if not present) Verify address is correct (use recommended address) Add product to cart Verify item quantity in cart Verify free shipping Continue checkout process Select/Verify shipping address Select free shipping Add gift message Get order total with tax Enter first gift card number and pin (balance below total) Get remaining order balance Enter second gift card number and pin (balance above total) Verify remaining order balance is $0 Continue through checkout Select billing address and continue Place order Confirm order success Save receipt as PDF or HTML file