ZS interview experience Real time questions & tips from candidates to crack your interview
Analytics Consultant
ZS
3 rounds | 10 Coding
problems
Selected Interview preparation journey
Journey
ZS was the first company that came to our campus and recruited 10-12 students out of a batch of 500+. The interview process was a 5 round extensive process which tested the candidate on multiple skills such as problem solving, aptitude and communication.
Application story
ZS was the first company that came on our campus for 3 roles - data science, decision analytics and business technology. There were 3 rounds, the first round was MCQ based online aptitude test, which was for the duration of 60 minutes.
Post that we had a case study round with discussion and then a personal interview with one of ZS managers. The process concluded with a final HR Interview.
Why selected/rejected for the role?
Communication skills and problem solving attitude is what they look for in the candidates. They also want the candidate to align to the core company values. I was aligned on these parameters and hence was selected.
Preparation
Duration: 1 month
Topics: General Aptitude, Case Studies, Guesstimates, Logical Reasoning, Puzzles, About ZS
Tip 1 : Read about the company values
Tip 2 : Go through multiple case studies
Tip 3 : Practice Aptitude
Application process
Where: Campus
Eligibility: Above 7 CGPA, No Backlogs
Tip 1: Include projects highlighting problem solving skills
Tip 2: Include roles with Non tech experience
Interview rounds
01
Round
Medium
Online Coding Test
Duration60
Interview date3 Sep 2020
Coding problem3
The online test was proctored. It consisted of 60 MCQ questions which were to be solved in an hour. The level of questions was not very difficult.
1. Sample Aptitude Question
In a plane, S lines of lengths 2, 3, 4, 5 and 6 cm are lying. What is the probability that by joining the three randomly chosen lines end to end a triangle cannot be formed?
Problem approach
Answer: 3/10
Topic: Geometric Probability/Combinatorics
2. Sample Aptitude Question
What is the remainder when the product 1998 Ă— 1999 Ă— 2000 is divided by 7?
Problem approach
Answer: 4
Topic: Modular Arithmetic
3. Sample Aptitude Question
What is the remainder when 22004 is divided by 7?
Problem approach
Answer: 1
Topic: Modular Arithmetic
02
Round
Medium
Video Call
Duration90
Interview date10 Sep 2020
Coding problem3
This was a case study round where we were given a case study and were asked to solve detailed questions related to it. Post that there was a case study discussion on our answers and the approach to them.
1. Optimizing Expansion Strategy for a Pharma Company: A Case Study Analysis
A detailed question was given highlighting the data of a pharma company which wanted to set up another unit in a city. Data given included month on month sales etc.
Problem approach
The key was to read the graphs carefully, understand the hints and have the right approach.
2. Forecasting Sales Performance for Future Quarters : A Case Study Analysis
The question involved predicting the sales of the company for the next quarter based on their previous sales and the factors involved
Problem approach
Be careful while solving and predicting
3. Strategic Expansion Leveraging Data Insights : A Case Study Analysis
Suggest tips on how and where should the company expand its operations based on the data
Problem approach
Look at all the metrics involved
03
Round
Medium
Video Call
Duration30
Interview date23 Sep 2020
Coding problem4
Your communication skills and problem solving attitude by giving puzzles and guestimates. They also screen your resume and ask questions from that and on the projects done in college.
1. Puzzle : Swiggy Driver Weekend Distance Guesstimate in Delhi
Guesstimate: How much distance do the Swiggy Drivers cover in a weekend in Delhi?
Problem approach
Tip 1: Keep sharing your thoughts while solving
Tip 2: Think from multiple perspectives
Tip 3: They are not looking for an answer but your approach
2. For Loop vs. While Loop
Difference between for loop and while loop.(Link)
Problem approach
Explain while giving specific examples
3. Teamwork Reflection: Insights from Final Year Project Collaboration
The discussion was on the final year project and what were the learning you got while working in a team
Problem approach
Tip 1: Follow STAR approach
Tip 2: Answer with confidence and do not lie
Tip 3:
4. General Question
Why should we hire you?
Problem approach
Tip 1: Highlight your strengths
Tip 2: Tell what makes you different
Tip 3:
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
How do you remove whitespace from the start of a string?
Choose another skill to practice
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