Thorough Penetration Testing for Web App

Advanced Web Application Penetration Testing I’m looking for a highly experienced professional penetration tester to perform an in-depth security assessment of the provided website/application. This is not a request for a basic vulnerability scan or a simple “the website is secure” assessment... (Budget: £500 - £1000 GBP, Jobs: Internet Security, Penetration Testing, Risk Assessment, Security Auditing, Testing / QA, Web Security, Website Testing)