I applied online. The process took 1 day. I interviewed at TikTok in Aug 2025
Interview
The OA on CodeSignal. It was a weird format of testing questions. It would be easy if there weren't so many files and details. They basically had you come up with test cases but the details of failure were unclear. Failed.
Asked me a little about my recent project experience before jumping into Leetcode. Was asked 224. Basic Calculator. Interviewer was helpful and helped break down steps. Very friendly and allowed me time to think.
Resume dive, tech questions, and leetcode medium. Prepare by doing leetcode mediums filtered for the company, and revise on basic software design principles and frameworks. Prepare to discuss deeply into your resume as well.
It was overall easy with leet code medium questions. Interviewer asked some questions but not too difficult. did it on lark, which is a software they made in bytedance to my knowledge