"Tell me about a time you stepped into a project or team where the role expectations for you were unclear. How did you define what success looked like, align stakeholders, and deliver results? If helpful, use an example involving a Meta-style cross-functional environment such as Facebook, Instagram, WhatsApp, or Ads."
This question tests whether you can create clarity when it is not handed to you. For a Project Manager at Meta, expectations are often shaped by the needs of Product, Engineering, Design, Data Science, Policy, and Operations rather than a fixed playbook. Interviewers want to see whether you can translate ambiguity into scope, priorities, operating cadence, and measurable outcomes without waiting for perfect direction.
They are also looking for influence without authority: how you earned trust, handled conflicting expectations, and took ownership when multiple teams had different definitions of success.
A strong answer uses one concrete example with real stakeholders, a clear timeline, and visible trade-offs. The best responses show how you diagnosed the gap, set expectations explicitly, drove alignment through artifacts or rituals, and delivered a measurable result while updating your own approach along the way.