Website Vulnerability Testing -- 2

I need an ethical hacker to test my live website for vulnerabilities.

Key Focus Areas:
- SQL Injection
- Cross-site Scripting (XSS)
- Broken Authentication

Ideal Skills and Experience:
- Proficiency in penetration testing tools
- Experience with SQL injection and XSS
- Strong understanding of authentication mechanisms
- Prior experience with live site testing

Please provide your credentials and a brief approach.