Blinkit Interview Experience For SDE1

Hey everyone, so I recently reached out to the employees of Blinkit regarding consideration for the SDE1 position as they only hire through referrals.

The HR got back to me and said they have 3 rounds as part of the hiring process, each being eliminatory.

  1. 1st round is PS/DS.
  2. 2nd round is System Design.
  3. 3rd round is a Cultural Fit Call.

PS/DS Round

  • Write the code of postorder traversal without using recursion.
  • Leetcode problem – https://leetcode.com/problems/best-team-with-no-conflicts/

System Design Round

  • Design Whatsapp and follow-up questions.
  • Write a SQL query to find the nth maximum salary.
  • Difference between mutex and semaphore.

Unfortunately, I wasn’t adequately prepared for the system design round, which led to my elimination. However, I would recommend thoroughly studying the relevant subjects for this round. Best of luck to those preparing for it!


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