"Tell me about a specific time you mentored an engineer who was growing into a senior role. How did you assess their gaps, support their development, and measure whether they were actually operating at the next level?"
This question tests whether you can develop talent intentionally rather than just give ad hoc advice. Interviewers want to see that you understand what senior-level growth really requires: stronger technical judgment, clearer communication, broader ownership, and the ability to influence beyond individual contribution.
They are also looking for evidence that you can tailor your mentoring style to the person and context. Strong leaders do more than encourage people; they create opportunities, give direct feedback, and help engineers build the behaviors expected at the next level without taking over the work themselves.
A strong answer uses one concrete example with clear stakes, such as a promotion path, a critical project, or a visible gap in senior-level behaviors. The best responses show a structured mentoring approach, specific actions over time, measurable outcomes, and a lesson learned about how to grow engineers effectively rather than simply telling them what to do.