Juspay Interview Experience for Product Support Engineer 2023

Round 1 : (Online Coding Round)

• It was held on HackerEarth.
• The Very first round is the Coding Round which comprises 3 Medium level Questions, which are expected to be solved in 90 minutes.
• The questions were related to the graph data structure.
• Each Question consists of 10 test cases, the person clearing a minimum of 15 was moved to round 2.

Question 1: Maximum weight node

You are given a maze with N cells. Each cell may have multiple entry points but not more than one exit (i.e. entry/exit points are unidirectional doors like valves).
The cells are named with an integer from 0 to N-1.
We have to find: Find the node number of the maximum-weight node (The weight of a node is the sum of all nodes pointing to that node).
Sample Input :
23
4 4 1 4 13 8 8 8 0 8 14 9 15 11 -1 10 15 22 22 22 22 22 21
Sample Output :
22

Question 2: Nearest Meeting Cell

You are given a maze with N cells. Each cell may have multiple entry points but not more than one exit (i.e. entry/exit points are unidirectional doors like valves). The cells are named with an integer from 0 to N-1.
We have to find :
Given any two cells - C1, and C2, find the closest cell Cm that can be reached from both C1 and C2.
INPUT FORMAT :
The first line contains the number of cells N.
The second line has a list of N values of the edge[ ] array, where edge[i] contains the cell number that can be reached from cell 'i' in one step. edge[i] is -1 if the ith doesn't have an exit.
The third line for each test case contains two cell numbers whose nearest meeting cell needs to be found. (return -1 if there is no meeting cell from two given cells)
OUTPUT FORMAT :
Output a single line that denotes the nearest meeting cell (NMC).
Sample Input :
23
4 4 1 4 13 8 8 8 0 8 14 9 15 11 -1 10 15 22 22 22 22 22 21
9 2
Sample Output :
4

Question 3: Largest sum cycle

You are given a maze with N cells. Each cell may have multiple entry points but not more than one exit (i.e. entry/exit points are unidirectional doors like valves). The cells are named with an integer from 0 to N-1.
We have to find: The length of the largest cycle in the maze, Return -1 if there is no cycle exists.
Sample Input :
23
4 4 1 4 13 8 8 8 0 8 14 9 15 11 -1 10 15 22 22 22 22 22 21
Sample Output :
6

Round 2 : (Online MCQ Round)

• This Round Consists of 14 multiple-choice questions.
• The questions were asked based on Excel data shared by the recruiter.
• The majority were easy questions, like finding average, and max between columns, if you have very basic Math and Excel knowledge, then passing this round will be a cakewalk.
• Tab Switch is restricted during this round, so use another PC for calculations, because we cannot perform those tasks on mobile.

Round 3 : (The Learnathon)

• This is the most crucial part of the interview process when you are applying for any role at Juspay.
• This is Approximately a 12-hour process.
• They will create an Exclusive Slack channel for us, From the Hiring Manager to technical staff and your buddy(the guide to help you throughout the process from the Juspay side) around 20 members will be there.
• The finishing time is not fixed if your buddy feels that we need time to solve the given problem he/she, will be extending it, So don’t worry about it.
• Coming to the problem they will give you a zip file, which will consist of a couple of Excel data and a word format question paper.
• They want us to analyze the given datasets for a couple of hours, and they simply ask some high-level questions to ensure that we understood the problem, the way it is meant to be.
• Finally, they ask to post our answers on the same channel.
• The way of communication between us and our buddy is via Slack chat or google meet(whenever needed), this completely depends on the buddy’s choice and our comfort, my buddy was used to guide me via google meet.
• For us, this process started around 11 AM in the morning, and the time to submit the final answers was extended to next day 10.30 AM.
• During this process, there may be a chance for Lead HR to have a formal talk with you, to know you are really interested for this role in Juspay.

Tips :

• Don’t hesitate to ask any questions them.
• Try to learn the basics of Excel, SQL, or Python(Pandas)
• Get to know about API, Webhooks, EventTrigger

Round 4 : (Final Interview)

Unfortunately, I was not able to reach here, but here are the inputs which I have collected from my friends.

• Tell me about yourself
• About your strengths and weakness
• Tell me about yourself, which is not on your resume
• Few Basic technical questions
• Why PSE? Why Juspay?
• Future Plans.

Tips: Be Open, Honest, and Polite to your Interviewer.