Financial Model Backtesting Expert

I need an experienced financial analyst to backtest my unique investment strategy. The strategy involves backtest ig a constant proportions portfolio with stocks and cash.

Key Requirements:
- Develop a robust financial model for backtesting.
- Execute backtesting on my proprietary investment strategy.
- Provide detailed insights and performance metrics.

Ideal Skills:
- Expertise in financial modeling and backtesting
- Strong analytical skills
- Proficiency in relevant software/tools (e.g., Python, R, Excel)
- Experience with stocks and cash asset classes

Please share your experience and approach.