I applied online. The process took 5 weeks. I interviewed at TikTok (London, England) in Feb 2022
Interview
The HR staff were very nice.
- HR screen (30 mins)
- Coding and ML basics interview (1 hour)
There would have been another two technical interviews + a behavioural. By this point I dropped out, since I got another offer. The process takes a very long time since interviews were scheduled once a week, meaning at minimum a 5 week process.
Interview questions [1]
Question 1
- TwoSum (hackerrank)
- Explain bias/variance tradeoff
- Describe regularisation
- How do you deal with imbalanced data
three rounds, each has coding + ml basic + resume related questions
understand all the details in resume is important, since might go very deep down the project you have worked on
The first round was mainly a CV walkthrough.
The second round focused in depth on one specific project.
Both rounds also included LeetCode medium-level problems.
The third round was with the hiring manager with both project and problems for their business.
I applied through a recruiter. The process took 1 week. I interviewed at TikTok (San Jose, CA) in Mar 2026
Interview
one hour first round tiktok usds phone screen interview. past projects questions, leetcode mid questions, and machine learning, deep learning, large language model questions. And then ask the interviewer questions.