React Dashboard Development

I need an experienced React developer to create a modern and interactive dashboard for my project. Unfortunately, I didn't get to specify the exact features or design preferences, so I'm looking for someone who can bring in their expertise to develop a dashboard that fits my needs.

Key requirements include:
- Development of user authentication and authorization
- Data visualization capabilities
- Real-time data updates
- A sleek and modern design that is intuitive and user-friendly

Ideal skills for this project include:
- Proficiency in React
- Experience with data visualization libraries like D3.js or Chart.js
- Knowledge of user authentication and authorization mechanisms
- Strong design sensibilities to create a modern, sleek and intuitive user interface