Interactive Data Visualization Dashboard Development -- 2

I'm looking for a skilled developer to create an interactive dashboard for data analysis. The dashboard should allow users to upload datasets in CSV or Excel format and explore insights using various custom filtering criteria. It should employ five different data visualization methods, specifically:

- Bar charts
- Line graphs
- Pie charts
- Heat maps
- Scatter plots
- Histograms

Ideal candidates should possess experience in:

- Dashboard development
- Data visualization
- User interface design

Please include your portfolio of similar projects in your proposal.