Excel VBA Developer Needed

I'm looking for an Excel developer experienced with VBA to work on an .xslm file. The project involves breaking login credentials and performing data manipulation.

Key tasks include:
- Performing calculations and data transformations
- Handling mathematical operations
- Data formatting
- Data validation

Ideal skills and experience:
- Proficiency in Excel and VBA
- Experience with macro development
- Strong background in data manipulation

Please provide your relevant experience and approach.