Excel sheet building Expert

I'm seeking an Excel expert to develop a sophisticated Excel sheet for tracking project costs. The sheet should primarily be used for budget tracking and should incorporate complex financial modeling.

Key requirements:
- Design an Excel sheet for comprehensive project cost tracking.
- Implement complex financial modeling into the sheet.
- Ensure the sheet is user-friendly and efficient for budget tracking.

Ideal skills and experience:
- Advanced proficiency in Excel.
- Strong background in financial modeling.
- Previous experience in creating budget tracking tools in Excel.