User Engagement Data Analysis in Power BI

I need an expert with Power BI, well-versed in data analysis and reporting, to assist with this project. The focus is on dealing with user engagement data and converting it into insightful visuals on a dashboard. Although not certain of specific metrics or KPIs for tracking user engagement, open suggestions and recommendations are appreciated.

Key tasks involved:
- Data preparation and transformation
- Building a clear and efficient dashboard
- Data analysis and reporting

The ideal freelancer should possess the following skills:
- Extensive experience with Power BI, especially with dashboard visualization
- Proven background in dealing with user engagement data
- Knowledge in general data analysis, business intelligence, and reporting.

Those having experience in suggesting relevant user engagement metrics or KPIs will have an advantage. Any suggestions made should then be incorporated into the visualizations.