Hello Sir,
*Thank you post your project description keen eye of my detail.
*We have already worked about this skilled Joomla , Php , Open cart , Wordpress , Drupal , Javascript , cake Php , Smarty , Os commerce , theme integretion ,eCommerce related, Api related , Shopping cart related and many other things related..
*If you give me opportunity i am ready to work on this project i have large portfolio if you see require our past work then plz check our profile
*You don't need me pay me anything advance . just create milestone and after delivery of the code you can pay me
Thank you