Power BI Dashboard Creation for Performance Tracking

I'm looking for a skilled Power BI dashboard developer to assist me in creating a comprehensive dashboard. The primary purpose of this dashboard is to track various performance metrics.

Requirements:
- Integration with Excel spreadsheets
- Visualization of data in the form of charts and graphs

Ideal Skills:
- Proficient in Power BI
- Extensive experience with Excel
- Excellent data visualization skills
- Strong understanding of performance metrics tracking

Please provide examples of your previous work with Power BI dashboards.