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      WhatBytes

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      Backend Developer Intern Interview

      Jun 27, 2026
      Anonymous Interview Candidate
      No offer
      Positive experience
      Average interview

      Application

      I applied online. I interviewed at WhatBytes in Apr 2026

      Interview

      The interview process consisted of two rounds. The first round was straightforward and focused on Python, Django, SQL, and basic problem-solving. I was asked about Django, Django mixins, an SQL query to find the second-highest salary, and a simple coding question to count the frequency of characters in a string. I cleared the first round and was shortlisted for the second. The second round was more challenging. The interviewer asked in-depth Django questions, including how Django works internally, advanced Django concepts, background tasks, and basic system design. The discussion focused more on backend architecture and practical development experience. I was not selected after the second round, but the interview was a valuable learning experience.

      Interview questions [6]

      Question 1

      Explain how Django works internally and describe the request-response lifecycle.
      1 Answer

      Question 2

      Write an SQL query to find the second-highest salary.
      Answer question

      Question 3

      Write a program to count the frequency of each character in a string.
      Answer question

      Question 4

      Why do we horizontally scale a system instead of just increasing the server size?
      1 Answer

      Question 5

      What is a load balancer, and why is it used?
      1 Answer

      Question 6

      What is Celery, and why do we need it?
      1 Answer