The question involved three data structures: Team, Folder, and File. Each file and folder has a list of user IDs representing users with access. If a user can access a higher-level file/team/folder, they can access all sub-files/folders. I was asked to impleme...
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The interview focused on the design and implementation of a log-based rate limiter. I needed to discuss the core implementation, potential issues with large data volumes or long runtimes, and the data deletion process. I implemented the data deletion part duri...
## Preparation Tips & Key Takeaways ### What I Learned - Non-technical behavioral questions can fill an hour by the interviewer digging deep and asking technical follow-ups. The questions often include Amazon Leadership Principles. I need to be able to answer...
I went through three interview rounds for a Machine Learning Engineer role at Roblox. It was for a full-time position for a recent graduate. **Round 1: HR Screen** The recruiter introduced the team and discussed the interview schedule. **Round 2: Coding and ML...
I was contacted by a recruiter on LinkedIn who stated my background was a strong match for a Machine Learning IC role at the director level. They asked the following questions: - Why do you want to join Roblox? - What are your compensation expectations? - What...
I used Python for the entire interview, which lasted 70 minutes. The questions covered: * Ensemble learning advantages and disadvantages * Decision tree impurity measures * Regularization advantages and disadvantages * Bias/variance comparison * Loss function...
I had two rounds of interviews for a summer intern position after applying for a winter intern role. **Round 1:** A senior engineer asked me questions based on my previous work experience, focusing on how to build a good dashboard and how to identify and solve...
I had a phone screen with three coding questions that were related. I had to code in a codepad environment. * **Part 1:** Given an LLM output and a list of sources (strings), return the number of times each source matches in the output. * **Part 2:** Given the...
I applied for an engineering role, but before speaking with the hiring manager, I was asked to read a research paper and provide feedback within five days, including likes, dislikes, and potential improvements. The paper was ML-related but focused on genetics...
After a 30-minute HR phone screen covering basic questions such as sponsorship, graduation year, and the interview process, I received a HackerRank link. The assessment consisted of 5 questions in total: 2 multiple-choice questions on GCP, 1 REST API question...
