Behavioral

3h of practice12 problems

Behavioural rounds are not a personality test; they are an evidence test. The interviewer is trying to find out what you have actually done, at what level, with what judgement, and a story with no number, no conflict and no cost in it provides no evidence at all.

Each problem here gives the question, the probes that will follow it, what a strong answer contains, and the version that sounds fine and scores nothing.

The round · Thirty to forty-five minutes of "tell me about a time". Expect four or five questions, each followed by two or three probes that are the actual interview.

Difficulty

Topic

12 problems

Easy

Tell me about yourselfThe question that sets the frame for the next forty minutes, usually wasted on a CV recital.Opening · Narrative · Framing15 min
What questions do you have for me?Still part of the interview, still scored, and the last thing they remember.Closing · Signal · Evaluation10 min

Medium

Tell me about a mistake that cost somethingThe round's best question. Most answers are pre-sanitised into uselessness.Ownership · Incidents · Learning15 min
Tell me about a time you disagreed with a decisionTwo failure modes, rolling over, and never dropping it, and the answer sits between them.Conflict · Influence · Judgement15 min
What is the hardest technical problem you have solved?A technical question wearing a behavioural question's clothes. The probes go deep fast.Depth · Debugging · Technical narrative15 min
Tell me about a deadline you were going to missWhat you cut, when you told people, and whether anyone was surprised.Prioritisation · Communication · Trade-offs15 min
Tell me about feedback you had to give someoneWhether you can be direct and kind at the same time, which most people can only do one of.Communication · Empathy · Directness15 min
Tell me about a project with no clear requirementsWhat you did in the first week, when nobody could tell you what success looked like.Ambiguity · Judgement · Communication15 min
Tell me about someone you helped growEvidence that your output is not only what you typed.Mentorship · Leverage · Seniority15 min
What is the work you are most proud of?The question that sets your level, answered by most people with the hardest thing rather than the most important one.Impact · Scope · Evidence15 min

Hard

Tell me about something you changed that was not yours to changeThe senior-level question. Nobody gave you the authority, so what did you use instead?Influence · Scope · Seniority15 min
Tell me about a time you said noWhether you can decline work without becoming the person who declines work.Prioritisation · Pushback · Judgement15 min