Mind Map Creation Web App with OpenAI Integration

I'm looking for a skilled developer to create a single-page web application centered around mind map creation and editing. The app will also need to integrate with the OpenAI API to produce text based on predefined queries.

Key requirements include:
- User-friendly interface for creating and editing mind maps
- Drag and drop node functionality
- Capability to format text and add images to the mind map
- Collaborative editing with real-time updates

Ideal candidate should have experience in:
- Single-page web app development
- jsmind.js or similar mind map libraries
- API integration, particularly with OpenAI
- Implementing real-time collaborative editing features
- User experience design for intuitive interfaces

Please provide examples of similar work you've done and explain your approach to integrating the OpenAI API for text generation.