React Native Expert For Mobile Application

I have existing application in android and iOS, Developed with React Native Platform which is developed through 3rd Party chat service provider. They have some internal server issue in their Push Notification System.

Now, I need React Native Expert who independent integrate the Firebase in the application which don't have any relevant connection with current application and that Firebase Push notification works independent and triggers from Web based Admin Panel.

Only Bid if you have sound experience with React Native and Big Advantage if you integrated Rocket.chat before.