Hello
I hope you are having a great day!
I'm web developer and specialist in PHP,javascript,jquery,html,css and prestashop , we have developed some modules that are released in prestashop market place (you can see theme in my Portfolio).
We have 3 years experience in developing and customizing and fixing themes and modules of prestashop and we can easily solve your problems .
I have developed lots of modules and also I have developed lots of applications related to json API So I can make your module perfect.
We will make a new proprietary module for your shop that you can easily install it on every shop !
I'm looking forward to hearing from you