Hi,
PHP expert here, ready to start. I've checked out WooCommerce, and though I haven't worked with it before, it's rather easy to see through, so developing an extension for you should be a relatively easy job.
Could you please provide me some sample XML files so I get a better understanding of what you are looking for?
Regards, Bence
P.S.: I placed a bid on your other project too, just to be sure.