Java Web Application Developer

I'm seeking a proficient Java programmer to help with the development of a new web application. This application should feature the following key attributes:

- User authentication system
- Data visualization tools

Ideal candidates should have:

- High level proficiency in Java
- Experience in developing web applications
- Expertise in implementing user authentication systems
- Knowledge and skills in data visualization tools

Please include examples of web applications you have developed in your bid. I look forward to collaborating with you on this exciting project.