Roblox interview questions

Tell me about a time you resolved a conflict in a group project.

Companies: Roblox

Last reported Sep 2025

The problem solving involved optimizing the outcome of a simulated game scenario.

Companies: Roblox

Last reported Sep 2025

Tell me about a project where the requirements were not clear or kept changing. How did you adapt and maintain productivity?

Companies: Roblox, Amazon, Apple, Bloomberg +11

Last reported May 2025

Tell me about a time where you mentored a colleague

Companies: Roblox, Bloomberg, Confluent, Google +9

Last reported May 2025

A multiple choice of how to deal with a workplace conflict.

Companies: Roblox

Algoritmos y estructuras de datos

Companies: Roblox

Asked a Rate limiting question

Companies: Roblox

Block Placement Queries

Support inserting obstacles at points on the nonnegative number line and, for each query, determine whether there exists any obstacle-free interval of length >= sz…

Companies: Roblox, Hudson River Trading, TikTok

Array · Binary Indexed Tree · Binary Search · Ordered Set

Candy Crush

Given an m×n board of integer "candies," repeatedly find and remove any horizontal or vertical runs of ≥3 identical candies, let the remaining candies fall…

Companies: Roblox, Meta, Microsoft

Array · Matrix · Simulation · Two Pointers

Closest Binary Search Tree Value

Given a Binary Search Tree and a target numeric value, return the value of the node in the tree that is closest to the target…

Companies: Roblox, Expedia, Meta

Binary Search · Binary Search Tree · Binary Tree · Depth-First Search

Data structures based leetcode problems

Companies: Roblox

Describe a challenge that you faced.

Companies: Roblox

Design a Game Recommender from Retrieval to Ranking

Companies: Roblox

Ranking Models · Recommendation Systems

Design Facebook Marketplace

Location-based discovery with photos, stale search results versus current listing state, and durable buyer-seller messaging.

Companies: Roblox, Meta

eventual-consistency · geospatial-indexing · idempotency · messaging

Design Hit Counter

Design a hit counter that records timestamps of hits and returns the number of hits in the past 5 minutes (300 seconds). The challenge is…

Companies: Roblox, Adyen, Apple, Cisco +5

Array · Binary Search · Data Stream · Design

Design leakage-free predictive maintenance pipeline

Companies: Roblox

Design Memory Allocator

Design an allocator for n memory units that supports allocating the leftmost contiguous block of a given size and freeing all units with a given…

Companies: Roblox, Apple, OpenAI

Array · Design · Hash Table · Simulation

Diameter of Binary Tree

Given the root of a binary tree, return the diameter — the maximum number of edges on any path between two nodes; the core challenge…

Companies: Roblox, Meta, Oracle

Binary Tree · Depth-First Search · DP on Trees · Tree

Explain an ML project end-to-end with tradeoffs

Companies: Roblox

Fit logistic regression and return top features

Companies: Roblox

ML Coding · Supervised Learning

How to make the most money from a factory

Companies: Roblox

I am signed an NDA but expect a question med-hard LC and hard LC

Companies: Roblox