Lead Backend Developer Interview Questions

12,393 lead backend developer interview questions shared by candidates

Round 1 - 30mins 1) Introduction 2)SQL Query on Joins. 3) Backend architecture of your project. 4) Basic SQL Questions. Round 2 - 1 hour 1) Introduction 2) Why do you like backend? 3) File based question in python (asked more on optimization) 4) math question

Backend Developer Intern

Interviewed at Growth Jockey

3.4
Jan 15, 2025

Round 1 - 30mins 1) Introduction 2)SQL Query on Joins. 3) Backend architecture of your project. 4) Basic SQL Questions. Round 2 - 1 hour 1) Introduction 2) Why do you like backend? 3) File based question in python (asked more on optimization) 4) math question

1st Interviewer asked me 3 medium questions 1st Q: https://leetcode.com/problems/minimum-number-of-arrows-to-burst-balloons/ 2nd Q: https://www.geeksforgeeks.org/find-the-largest-three-elements-in-an-array/ 3rd Q: I don't remember now it was also leetcode medium Did all three, one with some hints from the interviewer was shortlisted and got to the second round Second Round: He was a senior engineer, and was clearly not interested in the interview During the whole interview he did not say a single word other than explaining to me the question, the question was the hardest question I've seen or heard in the interview. The question was: You will be given an array of objects each object will contain a string of a sentence and a weight (int) You need to write an algorithm for searching the words in the sentence and the result should be according to the weight of the parent sentence For example ; Good things come and go, 30 Alice loves Bob's things, 40 So the user can search for "thi" and the output would be First: Alice loves bob's things Second : Good things come and go Also user should not be able to search anything by string "hings" or "ome" because it doesn't start with any word in any sentence I don't know what I did wrong here Did not get any further calls from them. ;(

Backend Engineer

Interviewed at 56 Secure

3.8
Nov 15, 2023

1st Interviewer asked me 3 medium questions 1st Q: https://leetcode.com/problems/minimum-number-of-arrows-to-burst-balloons/ 2nd Q: https://www.geeksforgeeks.org/find-the-largest-three-elements-in-an-array/ 3rd Q: I don't remember now it was also leetcode medium Did all three, one with some hints from the interviewer was shortlisted and got to the second round Second Round: He was a senior engineer, and was clearly not interested in the interview During the whole interview he did not say a single word other than explaining to me the question, the question was the hardest question I've seen or heard in the interview. The question was: You will be given an array of objects each object will contain a string of a sentence and a weight (int) You need to write an algorithm for searching the words in the sentence and the result should be according to the weight of the parent sentence For example ; Good things come and go, 30 Alice loves Bob's things, 40 So the user can search for "thi" and the output would be First: Alice loves bob's things Second : Good things come and go Also user should not be able to search anything by string "hings" or "ome" because it doesn't start with any word in any sentence I don't know what I did wrong here Did not get any further calls from them. ;(

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