This question evaluates a candidate's leadership, ownership, communication, and technical judgment by probing their most impactful project and personal contributions.
Tell me about the project where you had the most impact. Explain the business or user problem, why it mattered, what your specific role was, the hardest technical or organizational challenges, the trade-offs you made, how you measured success, and what you learned from the experience.
Be prepared for detailed follow-up questions about your personal contribution, the decisions you drove, and how the project changed outcomes for the team or company.