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Airtel Interview Experience for SDE (Intern+FTE) 2021

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  • Last Updated : 11 Jan, 2022

Online Assessment  – There were a few MCQs and 2 coding questions.

  • I didn’t remember the exact questions but both were of easy-medium category.
  • Luckily, I was able to solve both of them and thus got shortlisted for the next round.

Interview Round 1 – He introduced himself and asked me for an introduction and a few of my projects (since I did a lot of live projects) and asked if there is any URL or link for them. We had a discussion around 20mins and then he proceeds to the coding part.

  • First, he asked me to design a linked list with some basic operations (add a node, delete a node).
  • I told him the approach and code it within a few minutes.
  • Then, he asked me to implement the stack by using the above designed LinkedList. (Push and Pop operation)
  • Followed up, he asked me to implement a Queue using that stack (enqueue and dequeue operations)
  • I told him the O(n) approach first and then he asked me to optimize that.
  • He was completely satisfied by my answers and we end the interview on a happy note. (60-minutes)
  • The interviewer was friendly and a very kind person. I never feel it like an interview, more it feels like a discussion.

Interview Round 2– Starts again with some basic intro, followed by a quick discussion over my Projects. He asked me about Event Loop in JS and how JS works asynchronously.

Interview Round 3 – It was only a 15-minutes HR round.  

  • He asked me about what I think Airtel actually works. 
  • Then, he sends me a link and gave me 5-min to go through the entire article and tell him what I understood from that.

Verdict– After a few days, I got selected.


  • Keep your basics very clean, either in the case of DS/Algo or with the Tech stacks you used in your projects. They may be a game-changer any time.
  • Also, I would like to thank the GFG community, I got benefited from it a lot and it is my responsibility to give something back. I hope you guys enjoyed reading this. Keep faith in your abilities, prepare as hard as you can, hope for the best, good days are coming.  

Happy Coding!!

My Personal Notes arrow_drop_up
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