Sample report
Tell me about a time you improved a slow system.
Role: Senior backend engineer
STAR. The situation is clear. The result shows up late, after a long tour of the architecture.
Specificity. You name Postgres and a p95 drop from 1.8s to 240ms. That is the right altitude for this level.
Ownership. “We rolled it out” hides what you shipped. Say which part was yours.
Pace. Steady, then a four-second pause right before the number.
Filler. “Kind of” and “basically” cluster when you explain the tradeoff.
Tone. Confident on the result. Flatter when you describe how the team reacted.



