Dynamic Web App with Authentication

I'm looking for an experienced developer to create a web application with robust user authentication and advanced data visualization features.

Key functionalities include:
- User Authentication: Secure login, registration, and user management.
- Data Visualization: Interactive charts and graphs to represent complex data sets.

Ideal skills and experience:
- Proficiency in HTML, JavaScript, and MySQL.
- Experience in building secure authentication systems.
- Strong background in data visualization techniques and libraries.