Django App Security & Bug Testing

I need a comprehensive test of my Django application. The goal is to identify and rectify security vulnerabilities, functional bugs, and performance issues.

Key areas of concern:
- User authentication
- Data handling
- File loading times

Ideal skills and experience:
- Proficiency in Django
- Expertise in security testing
- Experience with performance optimization
- Strong debugging skills

Please provide a detailed report on findings and recommendations for each issue.