Machine Learning Engineer Interview Experience - London, United Kingdom
Process
I applied directly, and the recruiter sent me an invitation for a technical interview, skipping the screening call.
I did well in the interview and answered all the questions. A few days later, I received an automated rejection email with no feedback.
Questions
ML: How would you design a recommender system for TikTok's feed? We talked for half an hour about candidate generation and ranking, and how to scale this.
What metrics would you use for evaluating the candidate generation step? The answer is recall.
Coding interview: Reverse a linked list, and reverse a section of the linked list given two indices.
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Interview Statistics
The following metrics were computed from 7 interview experiences for the TikTok Machine Learning Engineer role in London, United Kingdom.
Success Rate
TikTok's interview process for their Machine Learning Engineer roles in London, the United Kingdom is extremely selective, failing the vast majority of engineers.
Experience Rating
Candidates reported having very negative feelings for TikTok's Machine Learning Engineer interview process in London, United Kingdom.
TikTok Work Experiences
- 2.0Just so-soMachine Learning Engineer • Current EmployeeSingapore, SingaporeMarch 10, 2025Pros: A lot of free drinks and a free buffet every day.Cons: Bosses push you every day and require a lot from you.
- 5.0Rewarding ML Engineering Role with Strong Growth OpportunitiesMachine Learning Engineer • Former EmployeeBeijing, Beijing, ChinaJuly 10, 2025Pros: Cutting-edge projects, a supportive team, ample learning resources, competitive pay, and impactful AI implementations.Cons: High expectations, tight deadlines, complex workflows, and constant changes, but growth is worth it.
- 5.0Great Pay, Long HoursMachine Learning Engineer • Current EmployeeBellevue, Washington, United StatesMarch 6, 2025Pros: High salary with a lot of perks.Cons: Working hours are too long.
TikTok Interview Questions
