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      Senior Software Engineer - Linux Kernel Interview

      Apr 19, 2025
      Anonymous Interview Candidate
      London, England
      No offer
      Positive experience
      Average interview

      Application

      I applied online. The process took 2 weeks. I interviewed at TikTok (London, England) in Feb 2025

      Interview

      The interview process was friendly and went smoothly. After gaining an understanding of my technical background, the interviewer focused on assessing my Linux system maintenance skills and scripting abilities. For Linux maintenance, the questions covered areas such as process management, network communication, and how to analyze CPU, memory, and network resource usage by specific processes. Finally, the interviewer used HackerRank to evaluate my Bash scripting skills through a practical exercise.

      Interview questions [3]

      Question 1

      How to quickly determine whether the interaction between two servers is based on UDP or TCP.
      Answer question

      Question 2

      How do you find the process that is using a lot of CPU and identify the reason for the high usage?
      Answer question

      Question 3

      Write a Bash script to batch rename files in a directory and its subdirectories, for example, rename all '.cc' files to '.cpp' files.
      Answer question