Roblox interview notes, page 7 of 15

“I'd actually seen this problem floating around before so I wasn't starting from zero.” The rest of the author's notes on Software Engineer interview at Roblox, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“My first instinct was just a hashmap from message to last-printed timestamp, which is basically the right answer, but I spent too long second-guessing it.” The rest of the author's notes on Software Engineer interview at Roblox, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This is the core question and it's bigger than it looks.” The rest of the author's notes on Software Engineer interview at Roblox, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The transposed layout tripped me up for longer than I'd like to admit.” The rest of the author's notes on Data Scientist interview at Roblox, Online Assessment (OA) round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This is one of those questions where you either know the formula or you're staring at the whiteboard hoping muscle memory kicks in.” The rest of the author's notes on Data Scientist interview at Roblox, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I knew the formula but fumbled the two-sided case for a second.” The rest of the author's notes on Data Scientist interview at Roblox, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Started with a fixed-window approach and it seemed fine until they asked me to walk through edge cases.” The rest of the author's notes on Software Engineer interview at Roblox, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“The idxmax part tripped me up a little.” The rest of the author's notes on Data Scientist interview at Roblox, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Picked a launch I knew well but probably talked too long setting up the context.” The rest of the author's notes on Product Manager interview at Roblox, Hiring Manager Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I started with the data model and spent probably too long on it.” The rest of the author's notes on Software Engineer interview at Roblox, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.