1p3a Experience · May 2026

openai fulltime onsite software engineer interview experience

SWE Onsite newgrad
2 upvotes 36 replies

Interview Experience

4月份面试的,今天才来得及总结一下,希望能给大家参考 店面: Coding:传染病,和地里的题目基本一样 第一问,只有感染的状态,多久都被感染 第二问,在1基础上有免疫的状态 第三问,感染过后D天可以免疫,多久达到稳定 第四问,有死亡的状态 似乎还有第五问,但没有看到 SD:设计云上IDE沙盒 着重聊了整个workflow 面试官问了一些关于沙盒执行用户程序时VM里发生了什么,楼主简短的答了一些,如果被深问可能会有点不太笃定昂赛 Coding:朋友圈,和地里题目基本一样 第一问,基本的follow/unfollow/snapshot操作 第二问,给定快照,给出所有的朋友 第三问,给定快照,推荐朋友 第四问,比较两个快照之间,朋友的不同,楼主没有具体写这一问,只是给出了解决方案 多嘴一句,这题的API是只给了朋友圈这个类的,所以楼主很耿直的把所有要完成的功能都在这个类里写了,在处理快照的时候不太直观,事后想一下,其实把所有功能放在快照这个类里写可能会更容易写哈 SD:支付系统 面试官依旧很着重workflow,每个部件的功能的明确划分 非功能需求楼主自己发挥,面试官没有太多...

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About OpenAI Interview Reports

This question was reported by a candidate who interviewed at OpenAI. LeakCode aggregates interview reports from 10+ sources, including 1Point3Acres, Glassdoor, LeetCode Discuss, Blind, Reddit, Indeed, and Nowcoder. Each report is translated where necessary, deduplicated against existing entries, and tagged by company, role, round type, and reporting date.

Use this question as one calibration data point, not a memorization target. Companies typically rotate their question pools every 2-4 months; the exact wording of a 2024 question may differ from what you encounter today. The underlying pattern, difficulty level, and follow-up depth at OpenAI are the higher-signal extractions to take from this report.

For broader preparation context, the OpenAI interview process typically includes a recruiter screen, one or two technical phone screens, and a 4-5 round on-site loop covering coding, system design (at L4+ levels), and behavioral. Reports tagged on LeakCode show the round-by-round distribution and typical difficulty calibration. To browse questions filtered by round type and seniority, use the company hub linked above.

How To Practice This Type of Question

Solve similar problems on LeetCode under timed conditions (25-35 minutes per medium difficulty). The goal is pattern recognition: recognize the underlying technique (sliding window, two-pointer, BFS, memoized recursion, etc.) within 60-90 seconds of reading. Strong candidates verbalize their hypothesis out loud before coding, then iterate based on feedback. Weak candidates dive into implementation immediately, lose time on the wrong approach, and run out of time for follow-ups.

Companies update their question pools every 2-4 months. The exact wording of any given question may have been retired by the time you interview. Focus your prep on the pattern, not the specific problem. The patterns that appear in OpenAI reports consistently are the ones worth investing in; one-off niche problems are not.

During Your OpenAI Round

Apply the standard interview round template: clarify requirements (2-3 minutes), state your approach out loud and confirm direction with the interviewer (3-5 minutes), code with narration (15-25 minutes), test with concrete examples including edge cases (5 minutes), discuss optimization or trade-offs if time permits (5 minutes). This template is universally accepted across FAANG and adjacent companies; deviating from it produces weaker interviewer feedback signal.

The single most predictive failure mode in OpenAI reports tagged "no hire": not asking clarifying questions. Interviewers are explicitly trained to weight this. Strong candidates ask 3-5 clarifying questions even on problems that look obvious; weak candidates dive into code immediately. The clarifying-question check is often the first signal recorded in the interviewer's written notes.