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Toppr Interview Experience | Off Campus for SDE Backend

  • Last Updated : 18 Dec, 2019

I applied in October 2019 through Employee Referral. The process for me consisted of 2 Technical Interviews, followed by a Technical+Managerial Round taken by their CTO. All the rounds were Telephonic, which can prove to be a disadvantage sometimes ( as in my case ) in case you’re not able to explain something properly on phone.

Round 1: Technical Interview ( Taken By a Senior Developer )

The interviewer started off with a formal introduction and asked me for the same. The interviewer then asked me about the projects I had done. Since the project was based on Deep Learning, he asked me for a complete pipeline description. Then he followed it up with the following questions –

  1. Maximum Overlapping Intervals – Explanation + Code
  2. Subset Sum Problem – Explanation + Code
  3. Database Normalization with Example
  4. ACID Properties
  5. Given a Table. Normalize it to the lowest possible Normal Form.

I was familiar with most of the concepts asked in this round. So, I answered all the questions very comfortably, and the interviewer was very satisfied as well.

Round 2: Technical Interview ( Taken by Toppr’s VP of Engineering)



The interviewer started off with a formal introduction again, followed by a Project Description.

He followed it up with the following questions –

  1. Given a Table – Users, with the following properties – ID, FirstName, LastName.                                                     How would you speed up the following query? ( HINT – Try to use Indexing )

SELECT FirstName, LastName FROM Users WHERE FirstName=’x’ AND LastName = ‘y’

  1. What are Tries and where are they used?
  2. Maximum Overlapping Intervals
  3. Prefix Search using Tries
  4. Pattern Searching in a String using Tries ( Just Like the Search Bar Feature )
  5. Suffix Tree
  6. Database Normalization

This round went pretty average as I was not able to explain the Pattern Searching using Tries to the interviewer.

Round 3: Technical Cum Managerial Round – ( Taken by the CTO )

This round was very short, lasted for about 15-20 mins. The interviewer started off with a formal introduction and then moved on to a few questions on Tries again. The HR had told me that this round was going to be managerial, but to my surprise, the same questions that I failed to answer in the last round were repeated and again, this round went pretty average. Apart from the Tries, the interviewer focused on Database Normalisation again. I managed to answer the questions related to Normalisation but terribly failed to explain the Tries Search. The interviewer then asked me to wait for 2-3 days for the Final Result.

 

I got selected and will be joining Toppr in May 2020.

Attention reader! Don’t stop learning now. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready. To complete your preparation from learning a language to DS Algo and many more, please refer Complete Interview Preparation Course. In case you are prepared, test your skills using TCS, Wipro, Amazon. GoogleE-Litmus and Microsoft Test Serieses.

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