I applied through a recruiter. I interviewed at Roblox
Interview
I was never informed of the interview topics or even given details of the requisition when recruiting reached out to me first. Shocking mix of linear algebra, C++ low-level concurrency, algorithms, and some strange behavioral questions.
The whole process was incredibly unprofessional and entirely lacked communication or structure. All this, to find out they pay well below market rate for talent. Know your worth in talking to others and in negotiation, and avoid them.
Interview questions [1]
Question 1
Phone screen, technical take-home assessment, series of virtual tech interviews during COVID
Reach out by recruiter, set up phone screen interview. 60 min coding interview. A leetcode style question with 3 follow up , overall experience is good got reject 2 weeks afterward.
The phone screen was surprisingly technical and lasted about 45 minutes, diving straight into system design. I was asked to design a leaderboard service, which caught me off guard at first. But as I started to outline my approach, I realized it was similar to a challenge I’d practiced on prachub.com just days before. The subsequent technical rounds were intense, focusing on DSA problems and scalability issues. In the end, I got an offer that I happily accepted, despite the difficulties I faced throughout the process.
Interview questions [1]
Question 1
Design a leaderboard service that supports tens of millions of concurrent players. Cover top-K queries, neighbor-rank queries, partial sharding, and consistency tradeoffs.
Reached out by HR and chatted with a hiring manager. Mostly Behavioral questions such as why you want to work at roblox. The conversation was great and smooth. But they rejected me after a few days.