AI Application Development with LLM API

I'm seeking a skilled developer to create an AI application capable of answering questions. This application will need to be compatible with both web and mobile platforms.

Key Requirements:
- Integrate with LLM API for AI functionality
- Implement a Q&A system within the application
- Ensure cross-platform compatibility (Web & Mobile)

Design:
- I have a design concept in mind, but I require a developer who can translate this into a working application.

Ideal Skills:
- Experience with LLM API
- Proficient in cross-platform application development
- Able to interpret and implement a design concept into a functional app

Please provide your portfolio and examples of previous similar projects you have completed.