xbitcoin
Hey there,
I've worked with the blockchain API and even directly with bitcoind for other projects that include online wallets, e-commerce sites, and bitcoin gambling as well. I would be happy to do this project, but the backend would probably be better off being written in Python with Flask. My reasoning for this is that PHP is one of the easiest language to create vulnerabilities in. In addition, Flask is very flexible and the plugins for it are robust and infinitely useful, which would allow me as the developer to create an application in much less time than it would take to write the application in PHP with Laravel or a similar framework.
Thanks for your consideration, please have a nice day.
Daniel