User Authentication API Hacker Needed

I am looking for a skilled hacker with proficiency in detecting and tracking website API, specifically user authentication API. The fundamental requirement for this project is to track the specific API, but please note the specific data to be obtained has not been detailed at this instance. Time is of the essence, so I'm seeking someone who can start immediately and deliver results rapidly. Quick, effective communication and task completion are vital in this job. Prior experience with API tracing and a comprehensive understanding of cybersecurity will be routing factors for selection.