Me postulé en línea. El proceso tomó 3 semanas. Acudí a una entrevista en TikTok (Londres, Inglaterra) en jun 2022
Entrevista
I applied directly and the recruiter sent me an invitation for a technical interview directly (skipping the screening call).
I did well in the interview and answered all of the questions. Few days later I got the automated rejection email with no feedback.
Preguntas de entrevista [1]
Pregunta 1
ML: how would you design a recommender system for TikTok feed? we talked for half an hour about candidate generation and ranking and how to scale this.
What metrics would you use for evaluating candidates generation step? the answer is recall.
Coding interview: Reverse a linked list, and reverse a section of the linked list given two indices.
Surprisingly straightforward — I expected a tougher challenge for a machine learning role. After a quick recruiter screen, the first technical round focused on implementing K-means clustering, which felt familiar. Handling edge cases for empty clusters was tricky, though. What really helped me prep were the algorithm explanations on PracHub, which gave me confidence going in. The final interviews were a mix of problem-solving and behavioral questions, and in the end, I received an offer that I accepted. Overall, it was a decent experience.
Preguntas de entrevista [1]
Pregunta 1
implementing K-means clustering from scratch and handling empty cluster edge cases
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.
