I applied through an employee referral. The process took 3 days. I interviewed at Roblox (Burlingame, CA) in July 2015
Interview
Delightful sequence of technical conversations with engineers, managers, and company officers. Included a whiteboard coding exercise. Spoke with key engineers and potential managers who were able to give me detailed descriptions of possible projects that I might work on: a very exciting suite of technical opportunities were explained. It was especially fun to explore the different languages involved in each of the software subsystems and the potential to utilize our favorites. It was amazing to see the kitchen stocked with fresh fruit, eggs, milk, and tons of more common fare. It was wonderful to see the massive wall of letters from children who were inspired to write to ROBLOX! I was astounded to find two children's paperback novels written in a ROBLOX alternate history type world available for perusing in a waiting area.
Interview questions [1]
Question 1
Fun question involving number theory and basic modular arithmetic on top of a few more typical data structure questions. It was nice that they did not require perfect syntax in this phase and instead focused on the design, thought process, data structures, algorithms, and asymptotic complexity.
Thank you for your thorough review. We’re glad that you had a positive experience and got to see the imagination that our users brighten the world with. We’re lucky to get to capture some of that magic to showcase in our office!
Other Senior Software Engineer interview reviews for Roblox
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.
