I applied online. I interviewed at Roblox (San Mateo, CA) in Jan 2021
Interview
I applied to Roblox in December 2020, receiving a hacker rank and a survey asking about my interests for working at Roblox within one week. The responses to the survey must matter, because I got an invitation to a virtual onsite with two engineers despite not passing all test-cases on the hacker rank. Both asked fairly standard questions and I enjoyed talking to both engineers afterwards. Within a week, I moved onto a final round with a bar raiser and an interview with a hiring manager. Once again, I had a great time talking to the interviewers after I finished the required tasks. All my interviewers were very helpful and friendly; you could tell they enjoy working for Roblox. I received an offer around a one week later. Overall process took around 7-8 weeks from the initial application to an offer.
Interview questions [1]
Question 1
Standard Leetcode questions, as well as some behavioral questions, and an open-ended question.
I interviewed twice for this position. I passed the online OAs which included four tests, and was invited to a technical interview online. The first interview was two reasonable LC easy-mediums which had two parts each. However, I could not complete the second part of the second question. When I re-interviewed with them two months later to try again, the question bank got way more difficult, involving LC med-hards. I could not complete the questions the second time around, and I imagine you would have to basically memorize these answers to be able to do them on the interview in an hour each.
First part of the interview was 2 different cognitive assessment, both hosted as Roblox games. First involved trying different combinations of car assemblies to pass different obstacle courses. Second involved optimizing a factory production line.
The second part of the interview takes you through a bunch of different workplace situations, and asks you to assess the least and most effective ways to address them from a list of options.
And finally, you are asked to complete two leetcode like questions on CodeSignal. One was about medium and one was hard.
I applied online. The process took 4 weeks. I interviewed at Roblox
Interview
OA - Roblox games, and regular leetcode style questions
Technical Round - Leetcode style questions. Didnt get pas this because I had an offer elsewhere, but Medium to Hard style questions
Interview questions [1]
Question 1
Optimize Factories - maximize the output while minimizing cost