Live Chat Implementation for Website & Flutter App

I'm looking to integrate a text-only live chat feature into both my website and Flutter application. The chat functionality is currently intended to be text-only, with the potential for future expansions. Key Requirements: - Implement a live text chat function on both the website and the Flutter app. - Ensure the chat system is robust, secure and user-friendly. Ideal Skills: - Proficiency in web development and Flutter. - Previous experience with live chat integration. - Knowledge of security protocols for chat systems. Please note, while I am not sure yet, there may be a need for the chat to support multiple languages in the future. Therefore, experience with multi-language support would be a plus.