Comprehensive Ethical Hacking

I need an ethical hacker to assess the security of our systems. We're looking for a detailed and professional evaluation across multiple platforms.

Key requirements include:
- Penetration testing and vulnerability assessments
- Security audits for web apps, mobile apps, and network infrastructure
- Deliver a detailed report on vulnerabilities and recommendations

Ideal skills and experience:
- Certified Ethical Hacker (CEH) or equivalent
- Proven experience in penetration testing and security audits
- Strong knowledge of security protocols and threat landscapes
- Experience with various security tools and software
- Excellent reporting and communication skills

Please provide samples of previous work and relevant certifications.