Advanced Excel Data Analysis Expert

I'm looking for an Excel expert to help with data analysis, specifically on sales data.

Key tasks include:
- Using Pivot Tables to summarize and analyze sales data.
- Performing trend analysis to identify sales patterns and insights.

Ideal skills and experience:
- Advanced proficiency in Excel, especially with Pivot Tables.
- Strong analytical skills for trend analysis.
- Experience with sales data is a plus.

Please provide examples of previous work and relevant experience.