Whatsapp like app Customization in already made app

We have a Project which is similar to a chatting app like whatsapp The Project needs some new features to be implemented and some small errors which needs to be fixed The Android App Code is written in both Kotlin and java and is using Firebase as backend We need a Experienced developer in Firebase,Realm Database, Kotlin and who has worked on A Chatting App like Whatsapp New Customization 1) The app has Status Functionality as in Whatsapp already implemented Suppose a user has 5 status ..touching on the right side the next status comes but the new functionality we need is when one user status ends the next user status should come in continuity untill all status ends 2) Incoming Call Has currently 2 Imageview for Call pickup and disconnect we need a Gesture button Slide to accept and disconnect call 3) When we paste a link in the message box it should automatically show the thumbnail and caption text of that link 4) Multiple Images should be grouped as in whatsapp and about 10 errors Only Bid if you have experience in the above field