"Tell me about a time you made a meaningful mistake as a project or product leader. What was the mistake, how did you realize it, how did you handle it, and what changed afterward? If helpful, you can use an example involving a Meta surface like Facebook Feed, Instagram, Messenger, WhatsApp, or Ads Manager."
This question tests ownership under pressure. At Meta, PMs are expected to move quickly, make decisions with imperfect information, and still take accountability when something goes wrong. The interviewer is looking for honesty, judgment, and how you respond once the mistake is visible—not whether you have a perfectly clean track record.
Strong answers also show how you communicate bad news, rebuild trust with cross-functional partners, and put mechanisms in place so the same issue does not repeat. A weak answer usually minimizes the mistake, blames others, or focuses only on damage control without reflection.
A strong response uses one specific example with real stakes, explains your role clearly, and spends most of the time on your actions after recognizing the mistake. The best answers quantify the impact, show how you informed stakeholders, and end with a concrete lesson that changed how you operate.