Roblox interview questions

Tell me about a time you had a conflict with a teammate/coworker.

Companies: Roblox

Last reported Aug 2026

Throttle

Given a sequence of request timestamps (or events) and throttling rules (e.g., at most K requests per time window or a required cooldown between same…

Companies: Roblox, Google, Microsoft, Plaid

Last reported Jul 2026

Find Most Frequent Function Call Path in Stack Trace

Given a list representing a stack trace with function calls and returns (indicated by '->' and '<-'), find the function call path that occurs most…

Companies: Roblox

Last reported Jun 2026

Rotting Oranges

Given an m×n grid with empty cells, fresh (1) and rotten (2) oranges, compute the minimum minutes until all fresh oranges become rotten as rot…

Companies: Roblox, Amazon, Anduril, Flipkart +3

Array · Breadth-First Search · Matrix

Last reported May 2026

Design a Game Recommendation System

Companies: Roblox

ML System Design · Recommendation Systems

Last reported May 2026

Design A To-Do List App With Multi-User Collaboration

Design a to-do list application similar to iPhone's Reminder app that allows users to create task lists, share lists with other users for collaboration, and…

Companies: Roblox, Asana, Atlassian

Last reported May 2026

They asked me to play Roblox games

Companies: Roblox

Last reported May 2026

Design a Job Scheduler

Design a distributed job scheduler that can handle high-throughput job processing (10,000+ jobs per second), support both scheduled (cron-based) and ad-hoc job execution…

Companies: Roblox, Airbnb, Apple, Autodesk +25

System Design

Last reported Apr 2026

Tell me about a time when you pushed back on a decision or request.

Companies: Roblox, Amazon, Checkout, Kaluza +3

Last reported Apr 2026

Design a Chat/Messaging System

Design a real-time messaging system like WhatsApp or Facebook Messenger that supports 1:1 and group conversations, message delivery status tracking, user presence features…

Companies: Roblox, Addepar, Airbnb, Airwallex +22

System Design

Last reported Mar 2026

Tell me about a time when you've had to push back or say no to a customer request.

Companies: Roblox, Amazon, Meta, Oracle +1

Last reported Mar 2026

What project are you most proud of?

Companies: Roblox, Adyen, Amazon, Anthropic +37

Last reported Mar 2026

Describe your most impactful project

Companies: Roblox, Airbnb, Amazon, Anduril +22

Project Deep Dive

Last reported Mar 2026

Design a game genre classifier

Companies: Roblox

ML System Design

Last reported Feb 2026

Design a 3D to 2D rendering service

Design a scalable backend system that takes 3D models, scenes, or game environments as input and renders them into 2D PNG images. The system should…

Companies: Roblox

Last reported Jan 2026

Describe a time when you took on work outside of your comfort area.

Companies: Roblox, Amazon, Meta

Last reported Jan 2026

Nested List Weight Sum

Given a nested list of integers and sublists, compute the total sum where each integer is multiplied by its depth in the nesting. The challenge…

Companies: Roblox, Meta

Last reported Jan 2026

Tell me about a time when you made an error in judgment.

Companies: Roblox, Airbnb, Amazon, Databricks +2

Last reported Jan 2026

Tell me about a time when you took on something significant outside your area of responsibility.

Companies: Roblox, Amazon, Checkout, Meta

Last reported Jan 2026

Design a friend activity system for a gaming platform

Design a system that displays personalized messages showing which friends have played a specific game along with the total player count, similar to Roblox's game…

Companies: Roblox

Last reported Jan 2026

Decision making questions that seem like a game simulation.

Companies: Roblox

Last reported Dec 2025

Leetcode hard backtracking/dynamic programming problem

Companies: Roblox

Last reported Dec 2025