Excel Data Specialist/Power Query Developer

We are a nonprofit organization seeking an experienced Excel Power Query specialist to build an automated data cleaning and transformation system. Our goal is to create an Excel template where subgrantees can paste raw export data and click Refresh to get clean standardized output.
Key requirements:
Strong experience with Excel Power Query (Get & Transform)
Ability to build reusable and protected templates
Experience with Fuzzy Matching and mapping tables
Experience with building automated data transformation logic
Ability to deliver a solution with minimal end-user effort
Good communication and documentation skills
Deliverables:
Excel workbook with:
Raw paste area
Automated Power Query logic
Mapping & transformation tables
Clean output and error log sheets
Protected/unlocked cells
One-button Refresh interface
Documentation on use and maintenance
Optional macro to run Refresh automatically
Preferred skills:
VBA/Macros
Power BI...