Website Upgrade and Fix

I'm looking for an experienced web developer to upgrade our existing website, Byndio.in, using ReactJS. The upgrade should include:

- User authentication system
- Interactive dashboards
- Enhanced search functionality

Additionally, we need to fix several technical issues:

- Slow loading times
- Broken links or images
- Responsive design issues

Ideal skills and experience:

- Proficiency in ReactJS
- Strong experience in building user authentication systems and interactive dashboards
- Expertise in optimizing website performance and fixing broken links/images
- Knowledge of responsive design principles

Please provide examples of previous work and a brief outline of your approach.