Roblox Front End Interview Questions
Explore round details, preparation advice, and related practice in GreatFrontEnd's Roblox Front End Interview Guide.
Requesting frontend questions at Roblox does not rule out an algorithm round later in the loop. Experiences from 2026 include JavaScript utilities, broader coding problems, and architecture discussions with different client/server boundaries.
JavaScript and user interface coding questions
- Flatten nested arrays, including a follow-up without recursion.
- Build a memory-card game or a traffic light.
- Implement a custom Promise class or process records from logs.
Recursive array handling can be practiced with Flatten, followed by an iterative version. For component state, the Memory Game exercise combines selection, matching, and reset behavior. Timed transitions are isolated in Traffic Light.
Algorithm questions
Candidates have encountered general algorithm questions after a JavaScript screen. Keep data-structure selection, complexity analysis, and testing in your preparation even when the role emphasizes browser work.
System design questions
- Design a notification system, including identifiers and pagination contracts.
- Design an Instagram-style photo-sharing application.
- Explain a client-side design while treating the backend as a black box when the interviewer sets that boundary.
The feed and media flows in Photo Sharing App provide practice for the photo-sharing scenario. Establish the expected frontend/backend depth before expanding into services and storage.
Insider tips from the GreatFrontEnd community
These tips were shared by GreatFrontEnd users who have completed interviews with Roblox.
June 2026:
Design Notification Systems for Staff / Principal role for Roblox. ... The interviewer started asking backend questions like, “How do you generate unique id on the server”, “how would you implemented the cursor for pagination in the backend”. Seems like they were REALLY into the real-time handling and deep dive into the API design.
May 2026:
Hi, I was asked to design a photo-sharing app (similar to Instagram) in one of the rounds, and it was primarily frontend-focused. I was also asked to design a global notification system, which leaned more toward full-stack design. I guess it depends on the team. Good luck!
January 2026:
During the onsite, I was asked an LC medium-hard question, nothing FE-specific at all. ... For SD, it was not full-stack. I was quickly told to stop diagraming the backend architecture and assume it's a black box, and that the interview will focus exclusively on FE system design.