Cracking Roblox's Software Engineer Interview: Tackling Rate Limiter Challenges

roblox | Software Engineer | Interview Experience

Interview Date: Not specified
Result: Not specified
Difficulty: Not specified

Interview Process

I had a phone screen interview with Roblox. The interviewer was very friendly and started off with some introductory questions. After that, he asked me to solve a coding problem involving rate limiting.

The problem was about designing a rate limiter for an API. The challenge was to ensure that a user couldn’t exceed a set number of requests in a certain time frame. I first discussed the problem, explaining how I would approach it using leaky bucket or token bucket algorithms.

Next, I wrote out the code, ensuring to handle edge cases as well as rate limiting logic. The interviewer asked a few follow-up questions regarding my implementation choices and edge cases, which I addressed. Overall, it was a positive experience, and I’m excited to see where it goes from here!

Technical Questions

  1. Rate Limiter (Design, Algorithm)

Tips & Insights

  • Be prepared to discuss your thought process and design choices in detail.
  • Familiarize yourself with common algorithms for rate limiting, such as leaky bucket and token bucket.