Asked about Being drilled on your own work
Walk me through the piece of work you are proudest of, and be ready for me to stop you.
An answer that works
Two sentences of context, then the decision you owned, the alternative you rejected and the evidence that settled it, then a number, then what went wrong and what you would change. Say explicitly which parts were yours and which were a colleague's, before being asked.
Then they push further
What did you personally do, as opposed to the team?
Name your part exactly and name what other people owned. Precision here costs nothing and buys credibility for everything else; vague ownership is found by the next question and the recovery is worse than the admission would have been.
What would you do differently?
Give one concrete change in how you would decide, not a resolution to be more careful. The strongest version names something you would do earlier, such as agreeing the evaluation set with the people who use the system before tuning anything.
Why didn't you just do it the other way?
If you considered it, give the reason and the evidence, and concede if theirs is better. If you did not, say so and then reason about it out loud: what it would have avoided, what it would have cost, and whether it was probably the better call.
What gets marked up
Strong answers are specific about personal ownership, name a rejected alternative unprompted, include at least one measured number, and treat a failure as a fact rather than a confession.
Reading an answer is not being able to give one. The section that teaches this is Being drilled on your own work, 4 hours of Interviewing well.
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