Web App Vulnerability Assessment

I need a seasoned ethical hacker to probe my public-facing web applications and surface every weakness before attackers do. The core goal is to identify vulnerabilities; no remediation work is required at this stage, but I do want clear, reproducible evidence for each flaw... (Budget: €30 - €250 EUR, Jobs: Computer Security, Internet Security, Network Security, Penetration Testing, Risk Assessment, Testing / QA, Web Security)