Sales ,Purchase, Inventory , Customer ,and Supplier report Development in Power BI

I am looking for a Power BI and Power Query expert to develop various reports for my sales, purchase, inventory, customer, and supplier data.

Reports Needed:
- Sales Reports
- Purchase Reports
- Inventory Reports

Specific Requirements:
- I have specific requirements for the metrics and data that should be tracked in the reports.

Data Source:
- I have an existing data source that needs to be integrated into Power BI for the report development.

Ideal Skills and Experience:
- Proficiency in Power BI and report development
- Strong understanding of sales, purchase, inventory, customer, and supplier data analysis
- Ability to work with specific requirements and metrics
- Experience in integrating existing data sources into Power BI

Please provide examples of previous Power BI report development projects that you have completed.