Hello Sir,
I've been through your job post thoroughly.
I can develop integrate plugin in your app as I'm having an experience in creating dynamic cross platforming app based on angular.js, ionic and sencha also. I've also used couple of designing frameworks for it like bootstrap 3 and mobile jQuery as well.
I have good experience in phonegap or cordova apps and online web service based applications development. Also implemented push notifications and XMPP chats.