Employee Details Update in Excel

I need an expert in Excel to update employee details in an existing file. The updates will include contact information, job position or role, and salary details. The freelancer will receive the Excel file with the current employee data and will be required to submit the updated information directly in this existing file.

Ideal skills and experience:
- Proficiency in Excel
- Attention to detail
- Experience with data entry and updates
- Ability to handle sensitive information with confidentiality and integrity.