Behavioral: Greatest Achievement / Proudest Project

BehavioralOpenAILast reported August 2026Low Frequency

Reported: 2× across candidate reports
First seen: September 2025
Last reported: August 2026
Reported outcome: unknown

Problem Overview

Describe your greatest professional achievement or proudest project. The interviewer may ask you to describe what made it significant, what technical challenges you overcame, how you led or collaborated with others, and what the impact…

3 candidate-reported follow-ups — the exact probes interviewers asked, with the trigger for each
The rest of the problem statement — full requirements, constraints, and edge cases
Approach and trade-offs — what passing candidates did, and the mistakes that sink people

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Verified Source

Every question is reconstructed from multiple independent candidate reports. Verbatim follow-ups, not invented ones.

Codex Fact-Checked

Technical claims, formulas, and scale numbers are reviewed against primary sources.

Interviewer Follow-ups

The exact follow-ups reported by candidates, with the trigger that prompts each one — plus the mistakes that sink people.