Hello,
I'm working with ionic framework for creating e comercial website and app. Ionic framework written on Angularjs. And I have develop many directives for this app. Example chat box for list chat user, directive for notification, for upload images and some another directives.
So I have enough skill to add functions for your directive.
In addition, I have experience with nodejs, mongodb, jquery, php... too.
Please have discuss about your requirement detail.
Thank you.