Power BI Dashboard Development

I'm seeking an expert Power BI developer to create interactive dashboards. The dashboards will need to connect to various data sources including SQL databases and Excel files.

Key Requirements:
- Expertise in Power BI
- Proficient in DAX queries
- Experience with SQL databases and Excel integration
- Strong skills in creating interactive dashboards

Ideal Skills and Experience:
- Proven Power BI development experience
- Strong analytical and visualization skills
- Ability to work with complex data sets
- Attention to detail and a creative approach to dashboard design

Please provide samples of previous work and relevant experience.