Applied twice. Same job. One resume rejected. The other got a callback.

A project manager ran an A/B test on a company's applicant tracking system. Resume A highlighted technical certifications and hard skills — auto-rejected. Resume B highlighted leadership, people management, and soft skills — the hiring manager called the next day. Same candidate, different keywords. The poster's conclusion: "If the gatekeepers are going to be robots, you might as well learn how to hack the algorithm." Recruiters in the comments warned that most ATS platforms flag duplicate profiles, but acknowledged the experiment proved what many candidates already suspected — the system is not reading you. It is scanning you.