We are seeking a highly skilled penetration tester to conduct a comprehensive security assessment of our e-commerce website. The goal is to identify vulnerabilities in the application, server, and network infrastructure. You will be required to:

1. Perform black-box and gray-box penetration testing.

2. Provide a detailed report of vulnerabilities, including risk levels and remediation steps.

3. Conduct a retest after vulnerabilities are patched.

4. Ensure compliance with industry standards like PCI DSS.

The ideal candidate should have proven experience in penetration testing and a strong understanding of web application security.