With experience in developing the tools mentioned above , you can see in my profile my experience in software on J2EE , with the possibility to show progress in line directly into a server QA, I also have experience putting the application in Amazon Web Services to high availability.
I propose to behold PrimeFaces layer, which is very powerful , OpenSource and as I told you gives you the possibility to get the Mobile part at the same time .
I have experience integrating with PayPal if you need to need to make charges to your customers.
I give you four months of free support for any bug or problem that may arise.