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Lead Backend Developer Interview Questions

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9,388 lead backend developer interview questions shared by candidates

R1 Project discussion, tech stack used. 1. Given a link list L0,L1,L2,...Ln, rearrange in the fashion : L0,Ln,L1,Ln-1,... 2. Implement a function which will generate unique random integers, there will be 1000 call/sec to that function R2 LLD of a rate limiter, first approach was discussed, pros and cons. Then I wrote classes for token bucket approach. R3 This was with a senior director who had 12+yoe working in start ups, he started asking me questions whether I wanted to work in start up or not, If I am serious about the role. After some nonsense discussion about start up cultures, he asked me to draw system design of my last project in last org to which also he was not satisfied much. Typical director round grinding.
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SDE-2 Backend

Interviewed at Mobikwik

3.3★
Feb 10, 2024

R1 Project discussion, tech stack used. 1. Given a link list L0,L1,L2,...Ln, rearrange in the fashion : L0,Ln,L1,Ln-1,... 2. Implement a function which will generate unique random integers, there will be 1000 call/sec to that function R2 LLD of a rate limiter, first approach was discussed, pros and cons. Then I wrote classes for token bucket approach. R3 This was with a senior director who had 12+yoe working in start ups, he started asking me questions whether I wanted to work in start up or not, If I am serious about the role. After some nonsense discussion about start up cultures, he asked me to draw system design of my last project in last org to which also he was not satisfied much. Typical director round grinding.

This is a design question, they asked me to design a server control system for a survey website, there would be two basic functions, one is next() and the other one is getQuestions(), the next() function would check if the answer to the survey is valid , and the function getQuestions() would return the questions in the next page. You should write out what you need.
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Software Engineer, Backend

Interviewed at Pocket Gems

4.2★
Jan 9, 2013

This is a design question, they asked me to design a server control system for a survey website, there would be two basic functions, one is next() and the other one is getQuestions(), the next() function would check if the answer to the survey is valid , and the function getQuestions() would return the questions in the next page. You should write out what you need.

The unexpected thing was being asked a technical question immediately after picking up the phone and since I was taken by surprise I stumbled a bit. I was promptly kicked out of the phone interview while I was still trying to get my head into the problem.
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Software Engineer

Interviewed at Pocket Gems

4.2★
Feb 16, 2014

The unexpected thing was being asked a technical question immediately after picking up the phone and since I was taken by surprise I stumbled a bit. I was promptly kicked out of the phone interview while I was still trying to get my head into the problem.

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