Web App Penetration Test & Report

I need a seasoned web-application security tester to run a full black-box assessment against xtracker.com. The engagement must align with the OWASP Top 10 and place extra scrutiny on three areas that matter most to me right now—authentication mechanisms, data-input validation, and session management... (Budget: $250 - $750 USD, Jobs: Compliance, Network Security, Penetration Testing, Risk Assessment, Software Testing, Testing / QA, Web Security, Website Testing)