Excel-Embedded Webapp Development

I'm looking for a developer to create a simple, minimalistic website with embedded Excel functionality. The site will require login credentials with admin and user roles.

Key Requirements:
- Embedded Excel for:
- Data entry and editing
- Data visualization and charts
- Login system with admin and user roles
- Simple and minimalistic design

Ideal Skills & Experience:
- Proficiency in web development
- Experience with Excel integration in web applications
- Knowledge of user authentication and role management
- Strong design skills for minimalistic interfaces

Please include examples of similar projects in your bid.