I am in need of a PHP freelancer for my site freelancejobsusa.com who experience in developing web api applications. I prefer someone who has experience with Google checkout, but will consider a php developer with solid xml solid using CURL and xmllib. It would be great if this can be written in php 5, but if not php 4 is ok too.

I need the application to do the following:

1. Capture the various notifications from Google Checkout and log them to a MYSQL database.
2. Have and admin section that allows me to pull a list of invoices by google checkout status for the xml messages new order, risk notfication, and order state change.
3. A detail view of a single invoice, and a button to charge that invoice.

Please, respond with your qualifications, approximate time frame, and cost to complete this job.

I will be launching latter this summer, and need someone who can get help me get up and running over the next couple weeks.

Thank You for taking the time to read this post, and I look forward to hearing from you.