1p3a Experience · May 2026

roblox machine learning fulltime onsite interview experience and challenges

MLE Onsite newgrad
1 upvote 6 replies

Interview Experience

店面:非常简单,感谢国人老大哥放水,就是给一个windows和一个target number,然后说含有target num的windows有哪些 vo:3轮, 除了ml sys design体验都非常不好,也不知道自己为什么挂 ml sys design: 标准推荐系统推荐游戏, 中规中矩, 感觉既没什么犯错也没什么出彩的地方.不过回忆的话可能就是没能说完整个流程,而在features和modeling那块回答一些怎么处理long-tail的问题,定义了一下loss啊什么的,其实我感觉这也是楼主至今比较困惑的点,1小时真的太短了,我也不知道怎么既有深度又能覆盖全部内容....感觉一旦面试官开始挖细节那说不完是100%的.后面没说怎么做deployment和monitor project presentation: 就是present一个最近做过的project,我也不知道面试官为什么不问问题, 每页我都等了他一下,说any questions here,但从始至终都没有任何问题,整得我有点蚌埠住了, 最后感觉象征性地问了下这个project里我是什么role啊之类的...

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About Roblox Interview Reports

This question was reported by a candidate who interviewed at Roblox. 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 Roblox are the higher-signal extractions to take from this report.

For broader preparation context, the Roblox 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 Roblox reports consistently are the ones worth investing in; one-off niche problems are not.

During Your Roblox 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 Roblox 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.