3rd party audio-video(ZEGOCLOUD) Chat & UI Developer for Mobile

"Project Overview"
We have an existing React Native app with partially integrated ZEGOCLOUD audio/video(Was working but few dependencies has changed) calling and Firebase notifications. We need an experienced developer to:

Integrate ZEGOCLOUD’s group chat/messaging module for real-time conversations.

Fix and enhance the audio/video call UI to match ZEGOCLOUD’s UIKit standards.

Scope of Work
1. ZEGOCLOUD Group Chat Integration
Implement real-time group messaging using ZEGOCLOUD’s SDK.

Ensure message history, read receipts, and typing indicators work correctly.

Handle offline message sync (if applicable).

Integrate with Firebase for push notifications (already set up).

2. Audio/Video Call UI Improvements
Fix UI inconsistencies in the existing call screens.

Align with ZEGOCLOUD UIKit for a polished experience.

Optimize call controls (mute, video toggle, speaker, etc.).

Ensure stable connection handling (reconnection, poor network UX).

3. Testing & Optimization
Test across iOS & Android (real devices + simulators).

Optimize for performance & battery efficiency.

Fix any existing bugs in the current ZEGOCLOUD implementation.