LLM-Powered SaaS Web App Development

I'm looking for an experienced developer to create a web app from existing source code. The app is an LLM-powered website generator. SOURCE CODE ARE MADE IN PYTHON

Key Requirements:
- Utilize provided source code
- Implement LLM functionalities:
- Text generation
- Text summarization
- Question answering
- Ensure robust user authentication and subscription management

Ideal Skills and Experience:
- Proficiency in web app development
- Experience with LLM integration
- Strong background in user authentication and subscription management systems
- Familiarity with analytics and reporting tools

Please provide examples of similar projects you've completed.