393103 PayPal Website Payments Pro

Hi, I have a custom made shopping cart which was built for my site with PHP and mysql. At this time I need to integrate it with PayPal Website payments pro with PHP. We already have the shopping cart part done ad it is working with PayPal Website Payment standard and also working with Google checkout. We also need the PayPal Express Checkout implemented as well along with the IPN notification response done. We only need someone with experience with Paypal integration mysql and HTML only experienced persons will be considered. You must show samples of your previous work. Thanks