Pen Test Website

I am looking to have a professional perform a thorough Penetration Test on my website. The main focus of the testing should be on the publicly-facing services, and to include automated testing. To help keep the website secure. The successful candidate for this project should possess a wide range of knowledge and expertise in the area of webserver and web application security. They should also be able to work with white lists/blacklists, patching, user authentication and other security measures. They must have experience in utilizing automated software penetration testing tools, such as Nmap, Nessus, Nikto, Metasploit and Core Impact. Finally, an ability to interpret the results of the tests and provide detailed reports upon completion is non-negotiable.