Application Penetration Testing

I need a focused penetration test against one of my applications. The engagement is limited strictly to the application layer—no network or infrastructure testing—so I expect you to probe for the kinds of issues highlighted in the OWASP Top 10 and similar standards... (Budget: $250 - $750 USD, Jobs: Penetration Testing, Risk Assessment, Software Testing, Testing / QA, Usability Testing, Website Testing)