J'ai passé un entretien chez TikTok (San Jose, CA)
Entretien
The interviewer's spoken English is hard to understand. When she proposed questions, she often changed the words she just mentioned, so it's very hard to follow. And I didn't get any feedback during the interview, but if you did not get any email after the interview for 2 days, the decision would be a rejection, even the status on the web still is interviewing.
Questions d'entretien [1]
Question 1
You may know what our team does. Please give some metrics that you think are important.
A former colleague referred me to the Data Scientist position at TikTok, which kicked off the interview process. The technical screen included a question about designing an A/B test for a ranking model, followed by an SQL challenge related to user sessions. The funny part was that the SQL problem was a twist on one I had been grinding through on PracHub just a few days prior. After some behavioral interviews, I received an offer, but ultimately decided to decline as it didn't align with my goals.
Questions d'entretien [2]
Question 1
Walk me through how you'd design an A/B test for a new ranking model on the For You feed, and how you'd pick guardrail metrics.
Given a sessions table (user_id, session_start, session_end, country), write SQL to find the users whose average session length grew the most week-over-week.
J'ai postulé en ligne. J'ai passé un entretien chez TikTok (Londres, Angleterre)
Entretien
one medium level sql test and an open question
Since i'm not familiar with business context(though i actually spent time preparing AB test and causal inference), i didn't get what i should answer.
Questions d'entretien [1]
Question 1
if tiktok shop is going to launch in Netherland, how to evaluate it before AB test