I applied online. The process took 1 week. I interviewed at TikTok (San Jose, CA) in Aug 2023
Interview
Following the review of my resume, I was provided with a Hackerrank online assessment. This assessment featured problems of a Leetcode 'hard' level complexity, and included multiple choice questions on bash, command line arguments, and SQL.
Interview questions [1]
Question 1
For the problems, focus on dynamic programming, priority queues, and graph algorithms on LeetCode. Also learn SQL.
I applied through a recruiter. I interviewed at TikTok (San Jose, CA) in Feb 2026
Interview
The interview was 45 mins. The interviewer was friendly and responsive. It started with 15 mins introducing yourself with backgrounds and experiences. Then it's 20 mins live coding (one leetcode question). And final 10 mins open-ended question.
Interview questions [1]
Question 1
What is some classical recommendation system architectures?
I applied online. The process took 3 weeks. I interviewed at TikTok (Singapore) in May 2025
Interview
2 round technical, 1 round conversational, 1 round talk with HR. Technical interview revolves around statistical language modelling coding, LLM fine tuning knowledge and SQL. Not difficult but need wide range of knowledge
Interview questions [1]
Question 1
What methods are used to increase token throughput of LLM inference without sacrificing ability?
I applied through a recruiter. I interviewed at TikTok (San Jose, CA) in May 2025
Interview
They began with questions based on my resume, asking about my projects and their impact. Then we moved on to a couple of easy algorithm problems—binary search and a combinations question you can find on LeetCode. Finally, given my background, they asked a few machine learning questions focused on recent work
