Very difficult. Probably LeetCode hard. Wouldn’t be able to do it in 30 minutes. Don’t know why they design it that way. TikTok makes things unnecessarily complicated. I hope they can be more considerate of the candidates next time.
During the first round, the interviewee showed respect and nice, but unfortunately, their performance deteriorated in the next round. They interrupted me with their own words repeatedly. Overall, it is a nice interview.
I applied online. The process took 2 weeks. I interviewed at TikTok (Los Angeles, CA) in Jun 2023
Interview
tech interview. it starts with some background info about recommendation system. Then one leetcode problem.(find target sum path , but instead of a tree, they give you a list) them book question on machine learning.