Customer Support Chat Mobile App Development

I'm looking to develop a multi-platform (iOS and Android) mobile application for my company that is primarily focused on customer support via live chat and various other chat-related services.

Key Features:
- User Authentication: The app should enable login through ‘Their Customer ID’. Secure and seamless access is crucial.
- Admin Dashboard: There should be an admin interface to monitor chats in real-time and collect data from chat transcripts.
- Chat Features: The app should incorporate file sharing and voice messages. These functionalities should be integrated into the chat service.
- Future Potential: Although not necessary for the initial build, the app should be designed with the potential to incorporate video chat in future updates.

Ideal Skills:
- Proficiency in cross-platform mobile app development.
- Experience with real-time chat interface design.
- Knowledge of secure user authentication systems.
- Ability to create intuitive admin dashboards.
- Background in integrating diverse chat features within an app.

Experience with developing customer support apps will be an advantage. Please bid if you can deliver a high-quality, user-friendly application.