TikTok interview notes, page 6 of 28

“This was a lot.” The rest of the author's notes on Data Scientist interview at TikTok, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I started with click-through rate as the primary metric which felt right, then conversion as secondary.” The rest of the author's notes on Data Scientist interview at TikTok, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I jumped straight to segmentation which felt right but I skipped the step of confirming the data is actually real first.” The rest of the author's notes on Product Manager interview at TikTok, Onsite - Product Sense / Strategy round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I started with the GMV piece because that felt safest, then tried to bolt on the rest.” The rest of the author's notes on Software Engineer interview at TikTok, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“Knew the prefix sum trick going in so the base problem was fine.” The rest of the author's notes on Machine Learning Engineer interview at TikTok, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“I started with a CTE to pull the min date per user, which felt right.” The rest of the author's notes on Data Scientist interview at TikTok, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This was a lot.” The rest of the author's notes on Software Engineer interview at TikTok, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

“This one was harder to frame than I expected.” The rest of the author's notes on Product Manager interview at TikTok, Onsite - System Design / Architecture round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.

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

“I went straight for the brute force O(n^3) approach first which, in hindsight, was probably not the move for a TikTok screen.” The rest of the author's notes on Software Engineer interview at TikTok, Technical Phone Screen round, covers how they worked through the question, what the panel pushed back on, and what they would do differently.