CXML Punchout Integration with ERP, MUST HAVE EXPERIENCE!

Hi - I'm looking for a developer that knows how to integrate a shopping cart I have with the likes of Ariba, Sciquest and Lawson...and can build a framework with the variables we provide (we can output the data that needs to be passed, the developer will merely need to tell us what pieces of data we need to deploy and manage the XML integration). YOU MUST...MUST...meet one of the following two criteria - 1) YOU HAVE A COMPLETED PROJECT IN YOUR FREELANCER PROJECT LIST that shows positive feedback relating to building CXML punchout integration. 2) YOU CAN DEMONSTRATE THAT YOU KNOW HOW TO DO THIS BEFORE I ACCEPT YOUR BID. That could mean a couple of things, you have a punchout test portal you can show me that functions...you have customer testimonials and demo info....or you have specific details you can relay to me on how punchout works and what data points I'll need to provide you, etc. I don't need/not looking for someone who has merely worked on XML in the past, you have to have specific CXML/Punchout experience.