Credit Card Fraud Detection System

I need a robust transaction fraud detection system, specifically focused on credit card transactions.

Key Requirements:
- Primarily targeting unauthorized purchases.
- Advanced algorithms for real-time detection.
- Comprehensive reporting tools.
- User-friendly interface for monitoring.

Ideal Skills & Experience:
- Expertise in machine learning and AI.
- Background in financial security.
- Experience with real-time data processing.
- Strong analytical and problem-solving skills.

Please provide relevant experience and approach.