PayU Interview Experience | 2+ Years Experienced

I received an email from a recruiter to schedule the virtual interviews. The recruiter informed me that each round would be an elimination round, meaning that if I did not...

I received an email from a recruiter to schedule the virtual interviews. The recruiter informed me that each round would be an elimination round, meaning that if I did not perform well, they would not proceed to the

next round. Three rounds were planned in total. [2 technical + 1 (Technical + Managerial)]. All the rounds were on the same day.

Round 1 An SDE-2 intercepted it. His communication and technical abilities were excellent. Find the Missing Number Depth Sum or Nested List Weight Sum Sample Input: [1 [4 [6]]]

Output: 27.

Explanation: 1 * 1 + 4 * 2 + 6 * 3 = 27( Number in the red color are the level in the nested list. ) Derive time and space complexity for both the problems

Round 2 The interviewer asked me to introduce myself and explain my projects. Asked me to write functions with Decorators with detailed explanation. Explain Restful APIs. Difference between primary key and Unique key in SQL. Given an array, print the Next Greater Element (NGE) for every element. Given an array of random numbers, Push all the zero’s of a given array to the end of the array. Discussion on Indexing in SQL.

Round 3 The interviewer asked me to introduce myself, Asked me to explain and design tables and how data is flowing into the tables in my project. Why use Python for web development and how python is used in Instagram along with different databases. How multiprocessing in Instagram works, event-driven programming in Python. What is AWS lambda and how it is useful? Detailed discussion about current role and responsibilities.

Round 4 This was the final HR round. I introduced myself and she asked why PayU. That’s all.