INTERVIEW PREPARATION

Behavioural interview questions: prepare evidence, not speeches.

The question may sound simple. The interviewer is listening for what you did, how you made decisions and what changed because of it.

Updated August 2026 · By Giulio Famiglietti

What behavioural questions are really testing.

“Tell me about a time…” questions are used because past behaviour gives the interviewer something concrete to assess. They are not looking for a perfect story or a grand achievement. They need enough detail to understand the situation, your contribution, your judgement and the result.

Common themes are leadership, conflict, customer focus, judgement, resilience, ownership, failure, collaboration and influence. The wording changes. The evidence they need does not.

Questions worth preparing

  • Tell me about a time you solved a difficult problem.
  • Describe a time you influenced someone without formal authority.
  • Tell me about a disagreement with a colleague or stakeholder.
  • Give an example of a decision you made with incomplete information.
  • Describe a project or goal that did not go to plan.
  • Tell me about a time you improved a process or raised a standard.
  • Give an example of putting a customer or stakeholder need first.
  • Describe a time you had to learn something quickly.
  • Tell me about a piece of difficult feedback you received.
  • Give an example of leading through pressure or uncertainty.
FIRST-HAND PERSPECTIVEThe first answer is only the start.

When I was interviewing and hiring at Amazon, the useful information often appeared after the opening answer. A candidate might say a project was successful; the follow-up was how success was measured, what they personally changed and why that approach was chosen. Prepare for the question behind the question.

Choose a story that can carry scrutiny.

Use an example with a real constraint: a deadline, conflicting priorities, a customer issue, limited information or a decision with consequences. Avoid stories where your role was peripheral or where the outcome cannot be explained beyond “it went well”.

  1. Write down six to eight experiences before matching them to questions.
  2. Give each one a clear label: failure, influence, delivery, customer, leadership or improvement.
  3. Check the scale: was it relevant to the role you are pursuing?
  4. Choose the example that fits the wording, not the story you like most.
  5. Keep another example ready if the interviewer asks a similar question later.

Use STAR without sounding rehearsed

STAR is a practical sequence, not a script. Keep the context short, make your responsibility clear, spend most of the answer on decisions and actions, then prove the result. If you memorise every sentence, a natural follow-up can make the answer fall apart.

  • Situation: company, industry, role and the minimum context needed to understand the challenge.
  • Task: what you were responsible for and what made it difficult.
  • Action: what you personally did, why you chose it and which trade-offs you managed.
  • Result: outcome, evidence and what you learned or changed afterwards.

Practise the follow-up, not just the opener

Record one answer aloud. Then ask yourself: What did I decide? What did I personally do? What alternative did I reject? How do I know the result was real? Those four questions expose most weak answers.

A useful practice answer is usually two to three minutes, not ten. If the interviewer wants more detail, let the follow-up determine where you go deeper.

Frequently asked questions

How many behavioural stories should I prepare?

Six to eight strong examples is a practical starting point. They should cover success, failure, influence, delivery, customer or stakeholder focus, collaboration and learning.

Can I use the same story more than once?

Sometimes, but do not rely on one example for every question. A varied story portfolio makes your evidence more credible.

Do I need a numerical result in every answer?

No. Use the best evidence available: a metric, timeline, adoption, customer feedback, quality improvement, risk avoided or a clear before-and-after change.

Practise with direct, useful feedback.

Coaching is for candidates who want help selecting stories, tightening answers and handling the follow-up questions that matter.

Explore interview coaching
ABOUT THE AUTHORGiulio Famiglietti

Giulio spent approximately eight years at Amazon across Operations, Business Development and Program Management, including hiring-manager and interviewer responsibilities. He has since coached 300+ professionals.