Automated BI Dashboard Development

I'm seeking an Excel and Google Sheets expert to create automated Business Intelligence (BI) dashboard templates for financial reports. The dashboards should have interactive charts, automated data refresh, and a premium aesthetic design.

Key Requirements:
- Platform: Both Excel and Google Sheets
- Data Type: Financial reports
- Features:
- Interactive charts
- Automated data refresh
- Custom formulas

Ideal Skills & Experience:
- Proven expertise in Excel and Google Sheets
- Strong background in financial data visualization
- Proficiency in creating interactive charts and setting up automated data refresh
- Excellent design skills for a professional look

Please include samples of previous work. Looking forward to your proposals!