Power BI RLS Setup

I need an experienced Power BI developer to set up Row-Level Security (RLS) for department-level access on customer data. The data is sourced from Excel files.

Key Requirements:
- Configure RLS in Power BI for department-level access
- Integrate Excel data sources
- Ensure data security and access control

Ideal Skills:
- Proficiency in Power BI and RLS
- Experience with Excel data integration
- Strong understanding of data security protocols

Please provide examples of similar work done and your approach to this task.