TikTok

Machine Learning Engineer Interview Experience - United States

September 29, 2025

Positive ExperienceNo Offer

Process

HR reached out, then the first round was with an MLE. I answered all the questions. The interview was three parts: first, about my resume; then, ML fundamental questions; and finally, a relatively easy LeetCode problem. I was rejected after one week, and HR told me I wasn't a fit.

Questions

How do you deal with data imbalance?

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Interview Statistics

The following metrics were computed from 113 interview experiences for the TikTok Machine Learning Engineer role in United States.

Success Rate

Pass Rate

TikTok's interview process for their Machine Learning Engineer roles in the United States is extremely selective, failing the vast majority of engineers.

Experience Rating

Positive36%

Neutral44%

Negative19%

Candidates reported having good feelings for TikTok's Machine Learning Engineer interview process in United States.

TikTok Interview Questions

Subarray Sum Equals K

Medium

Determine the total number of continuous subarrays within a given array that sum up to a specific target value, k.

ArraysSliding Windows

Longest Substring Without Repeating Characters

Medium

Find the length of the longest substring within a given string that contains no repeating characters. The substring must be contiguous.

StringsSliding Windows

Generate Parentheses

Medium

Given a number 'n', generate all possible well-formed (balanced) parentheses strings of length 2*n. For instance, if n=3, you need to create all valid combinations like '((()))', '(()())', etc.

RecursionStrings