Describe a Hard Technical Problem You Solved and a Coworker Conflict You Resolved

In a hiring-manager round that opens with a conversation about the team's systems, the interviewer moves to two behavioral questions about your past work: a technically hard problem you solved, and a conflict with a coworker. Answer each as a complete story. ### Clarifying Questions - Should both stories come from the current role, or are earlier roles and cross-team situations acceptable? - How much technical depth does the interviewer want in the first story: the architecture level, or down to the code, metrics and data? - For the conflict, does a disagreement with an engineer on another team count, or should it be someone you worked with day to day? ### Part 1 — A hard technical problem you solved "What is a hard technical problem you solved at work?" ```hint Make the difficulty visible Pick a problem where you can say why the obvious fix did not work and what you measured to find the real cause. ``` #### What This Part Should Cover - Why the problem was hard, in technical terms the interviewer can check - The candidate's own diagnosis and decisions, including the options rejected and why - A measurable result and what changed permanently afterwards ### Part 2 — A conflict with a coworker "Have you had a conflict with a coworker? How did you resolve it?" ```hint Show the other side Choose a disagreement in which the other person had a reasonable position, and be ready to state that position fairly. ``` #### What This Part Should Cover - What the disagreement was about and what was at stake - How the candidate understood the other view and moved the two of them toward a decision - The outcome, and the working relationship afterwards ### What a Strong Answer Covers - Situation, task, action and result for each story, concise at first, with detail held back for follow-up questions - Clear ownership: "I" for the candidate's own actions, and credit to others where it is due - Technical depth in the first story that holds up under probing - Judgment in both stories: trade-offs, when and how to escalate, and lessons applied later ### Follow-up Questions - If you faced the same technical problem again, what would you do differently? - How did you know your fix worked, and what did you monitor afterwards? - In the conflict, what would you have done if the other person had refused to change their position? - Tell me about a time when you were the one who turned out to be wrong.