Signal messenger app server and clients rebrand and configure on our servers project.

I am looking for an experienced developer that have worked on the signal messenger app to rebrand the app and add additional features to the app as follows;

Mobile App
● iOS supported from iOS 8+
● Android supported from Android 4.0.1

Feature Listing and description.

Voice call
Video call
Instant Messaging with custom emotions and stickers
Edit already sent message
Group Chat
Group video/audio call
Photo and Video files transfer
Files and Documents transfer
Users can share document between each other.

Voice Messages
Users can record a voice message and send to other users.

Sticker Store
Users can buy stickers from the sticker store which could be zero rated or could have a fee attached to it.


Other Features;

● Call Forwarding
● Out Calls Rates view with multi-currency
● Low Data Usage Mode
● Adaptive audio codec
● HD Audio codec
● HD Video codec
● Contacts integration
● Contacts synchronization
● Contacts blocking
● Local numbers recognition
● User Profile integration with Facebook
● User online status
● Balance view with multi-currency
● Changing the UI language of the app
● Changing the UI text size
● Changing chat background
● Orientation for left-handed users
● Mute Notifications
● Displaying Bandwidth Consumption of Recent Calls

All systems components must work on our servers.

server
Desktop IOS and Android Clients must be rebrand and must provide us.