Roblox is seeking a Senior Software Engineer (IC3) to join our dynamic team. This role involves designing, developing, and maintaining scalable and robust software solutions that power the Roblox platform. You will collaborate with cross-functional teams to deliver high-quality features and contribute to the technical direction of our products. We are looking for experienced engineers who are passionate about building engaging experiences for millions of users worldwide.
Rounds·3
Timeline·~14d
Experience·5 - 8 yrs
Comp band·US$140000 - US$180000
Interview time·150 min
Evaluation
Preparation
Tips
Study plan
Fig · Study plan — 04 phases
01 / 04Phase 01 of 04
Weeks 1-2: Data Structures & Algorithms fundamentals. Practice 5-7 problems/day.
Weeks 1-2: Focus on core data structures (Arrays, Linked Lists, Stacks, Queues, Trees, Graphs, Hash Tables) and algorithms (Sorting, Searching, Dynamic Programming, Greedy Algorithms). Practice implementing these from scratch and analyze their time and space complexity. Aim for 5-7 problems per day.
Phase 02 of 04
Weeks 3-4: System Design principles and common interview questions.
Weeks 3-4: Dive into system design. Study concepts like scalability, availability, reliability, load balancing, caching, databases (SQL vs. NoSQL), and microservices. Work through common system design interview questions (e.g., design Twitter, design a URL shortener).
Phase 03 of 04
Week 5: Behavioral questions preparation using STAR method. Prepare examples.
Week 5: Prepare for behavioral questions. Use the STAR method (Situation, Task, Action, Result) to structure your answers. Reflect on your past experiences related to teamwork, leadership, problem-solving, and handling conflict. Prepare specific examples.
Phase 04 of 04
Week 6: Roblox research, question preparation, and mock interviews.
Week 6: Research Roblox thoroughly. Understand their business model, recent news, and technical challenges. Prepare insightful questions for the interviewers. Do mock interviews with peers or mentors to simulate the interview environment.
Questions
Locations
Fig · Regions — 03 locations
01 / 03Location
Interview focus
Common questions
Tips
Location
Interview focus
Common questions
Tips
Location
Interview focus
Common questions
Tips
Rounds
Expand a step for evaluation criteria, sample questions, and prep notes.
Technical Interview (Coding) · 45 min · Software Engineer
This round focuses on your core computer science knowledge. You will be asked to solve one or two coding problems that test your understanding of data structures and algorithms. The interviewer will assess your ability to analyze the problem, devise an efficient solution, write clean and correct code, and explain your reasoning. Expect to discuss time and space complexity.
What they look for
Evaluation
Sample questions
Given an array of integers, find the contiguous subarray with the largest sum.
Implement a function to check if a binary tree is a valid Binary Search Tree.
Find the k-th largest element in an unsorted array.
Prep for this round
Common rejection reasons
System Design Interview · 60 min · Senior Software Engineer / Engineering Manager
This round assesses your ability to design large-scale, distributed systems. You will be presented with an open-ended problem (e.g., design a social media feed, a ride-sharing service, or a real-time analytics system). The interviewer will evaluate your approach to requirements gathering, component design, data modeling, API design, scalability, and reliability. Be prepared to discuss trade-offs and justify your design choices.
What they look for
Evaluation
Sample questions
Design a system like YouTube, focusing on video uploading, processing, and streaming.
Design a distributed rate limiter.
Design a notification system for a large-scale application.
Prep for this round
Common rejection reasons
Behavioral Interview · 45 min · Hiring Manager
This round focuses on your past experiences, behavioral competencies, and cultural fit. You will be asked questions about your career history, how you handle specific situations (e.g., conflict resolution, dealing with failure, managing challenging projects), and your motivations for joining Roblox. Use the STAR method (Situation, Task, Action, Result) to provide clear and concise answers backed by specific examples.
What they look for
Evaluation
Sample questions
Tell me about a time you had to work with a difficult teammate. How did you handle it?
Describe a project where you took initiative or demonstrated leadership.
What are your strengths and weaknesses as a software engineer?
Why are you interested in working at Roblox?
Prep for this round
Common rejection reasons
DSA
Frequently reported on Roblox loops
Other guides
