I applied to Roblox in December 2020 and received a HackerRank challenge and a survey about my interests within one week. The survey responses must have mattered, because I received an invitation to a virtual onsite with two engineers, despite not passing all test cases on the HackerRank. Both engineers asked fairly standard questions, and I enjoyed talking to them afterward. Within another week, I moved on to a final round, which included an interview with a "bar raiser" and an interview with a hiring manager. Again, I had a great time talking to the interviewers after completing the required tasks. All my interviewers were very helpful and friendly; it was clear they enjoy working for Roblox. I received an offer about a week later. The overall process took approximately 7-8 weeks from the initial application to the offer.

Standard Leetcode questions, as well as some behavioral questions, and an open-ended question.