Process
The OA consists of 7 questions:
- 5 multiple-choice questions
- 2 coding questions
Coding problem #1 was an easy-medium level, and coding problem #2 was medium-hard. This is not bad, but only 110 minutes were provided to finish.
Questions
The question requires decoding a string containing only numbers. The correspondence between numbers and letters is as follows:
'A' -> "1" 'B' -> "2" ... 'Z' -> "26"
The task is to count how many different ways a string can be decoded.
For example, the string "11106" can be decoded as:
- "AAJF" (decoded as 1 1 10 6)
- "KJF" (decoded as 11 10 6)
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Interview Statistics
The following metrics were computed from 15 interview experiences for the TikTok Machine Learning Intern role in United States.
Success Rate
TikTok's interview process for their Machine Learning Intern roles in the United States is extremely selective, failing the vast majority of engineers.
Experience Rating
Candidates reported having mixed feelings for TikTok's Machine Learning Intern interview process in United States.
TikTok Work Experiences
- 5.0TikTok - Someone hates it, someone likes itMachine Learning Intern • Current EmployeeSan Jose, California, United StatesAugust 24, 2025Pros: • Competitive compensation and comprehensive company policies. • Excellent in-house cafeteria with a wide variety of food options. • Strong and modern technical stack. • Robust alumni network, especially from CMU and other top schools.Cons: Certain compliance risks exist due to the nature of the business. TTP (Trusted Technology Partner) environments impose strict access control, making it difficult for regular engineers to debug user-level details.
- 4.0Interesting work, a lot of pressure thoughMachine Learning Intern • Current EmployeeNovember 3, 2025Pros: The work is interesting, and they are flexible about the methods and research you do, since they only care about performance and efficiency.Cons: Obviously, they prefer Chinese speakers. Also, they expect you to work and attend meetings after hours.
- 5.0Easy Platform, Busy HrSoftware Engineer(Internship) • Former EmployeeRemoteDecember 14, 2022Pros: A nice communication platform, and easy to use.Cons: Too many employees, and HR is too busy.
TikTok Interview Questions
