Behavioral question

Tell me of a time when a technical decision you took fell apart.

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What this question tests

Ownership and learning from a real technical failure, tested against Amazon's 'Are Right, A Lot' and 'Learn and Be Curious.'

How to approach it

  1. Situation: briefly describe a real technical or product decision you championed that didn't hold up.
  2. Task: state what you were trying to achieve and why you chose that approach at the time.
  3. Action: describe what went wrong specifically, for example a scaling assumption that broke or an unanticipated dependency.
  4. Result: state the concrete impact honestly, downtime, delayed launch, or cost.
  5. Reflection: name the specific process change made afterward, for example a design review step or a load-test gate.
  6. Close by showing the fix stuck in later decisions, not just a one-time lesson.

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