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MasterCard Data Scientist Interview Questions and Answers

Updated 3 Feb 2020

MasterCard Data Scientist Interview Experiences

1 interview found

I applied via Campus Placement and was interviewed before Feb 2019. There were 3 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. 1. How to choose optimum probability threshold from ROC?
  • Ans. 

    To choose optimum probability threshold from ROC, we need to balance between sensitivity and specificity.

    • Choose the threshold that maximizes the sum of sensitivity and specificity

    • Use Youden's J statistic to find the optimal threshold

    • Consider the cost of false positives and false negatives

    • Use cross-validation to evaluate the performance of different thresholds

  • Answered by AI
  • Q2. 2. How to test time series trend break up?
  • Ans. 

    To test time series trend break up, statistical tests like Augmented Dickey-Fuller test can be used.

    • Augmented Dickey-Fuller test can be used to check if a time series is stationary or not.

    • If the time series is not stationary, we can use differencing to make it stationary.

    • After differencing, we can again perform the Augmented Dickey-Fuller test to check for stationarity.

    • If there is a significant change in the mean or va...

  • Answered by AI
  • Q3. 3. How do you deal with senior customer when you don't have enough data?
  • Ans. 

    Communicate transparently and offer alternative solutions.

    • Explain the limitations of the available data and the potential risks of making decisions based on incomplete information.

    • Offer alternative solutions that can be implemented with the available data.

    • Collaborate with the customer to identify additional data sources or explore other options to gather more data.

    • Provide regular updates on the progress of data collect...

  • Answered by AI
  • Q4. 4. Do you prefer working in clear defined goal space or where customer isn't sure what he wants?

Interview Preparation Tips

Interview preparation tips for other job seekers - Be business specific.

Skills evaluated in this interview

Data Scientist Jobs at MasterCard

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Interview questions from similar companies

Interview Preparation Tips

Round: Technical Interview
Experience: The technical interview included a VP round which was more of a resume round. I concentrated my interview (VP round) on Machine learning which my field is. This was kind of a trick because many people screwed up this round. Hence, VP offered to me to work in VISA HQ.

Round: Technical Interview
Experience: This technical round included questions from almost all topics of CS (SQL query, coding, Networks, Security, Hadoop and Map-Reduce).

General Tips: Do’s :
1) Start right from August
2) Prepare basics of subjects
3) Try to code using pen and paper
4) Code as many problems as you can from all domains with only 1 language (C/C++/Java)
5) Keep a friend with you at all times during interviews. If you are selected for more than 1
companies in 1 slot, ask your friend to manage your interview schedules given he knows your
priorities. I was not in a position to attend more than 2 interviews in the same slot.

Don’ts :
1) Don’t lose hope if you are not shortlisted for your dream company or any company of your choice because being an IITian you have large number of better choices and which would fit in your profile better.
2) Don’t argue with the interviewers and never pretend that you are over smart in a given domain.
3) Do not take HR rounds lightly even if you are sitting for CS companies.

Final Tips :
Start your preparation early. Placement is 90% preparation and 10% luck.
College Name: IIT Kanpur

Data Scientist Interview Questions & Answers

Visa user image Pranjal Singh

posted on 14 Jan 2015

Interview Preparation Tips

Round: Test
Duration: 120 minutes
Total Questions: 42

Round: Test
Experience: There was a test for VISA which had following sections:
Assessment Composition:
1. Coding Skills: 2 Questions - Very simple problems - 30 marks total
2. Programming: 10 Questions - Simple Java Questions --Access modifiers, inline function, Red black tree, heap
3. Machine Learning Hadoop MCQ: 6 Questions You can't answer a single question if ML/BigData is remote-land for you.
4. Networking MCQ: 6 Questions - Again basics. Data layer questions. IP class basic question, fields in ethernet header.
5. Operating System: 6 Questions - Memory management mostly
6. Infrastructure: 6 Questions - Real life scenarios - server client questions.
7. Application Security: 6 Questions
Duration: 120 minutes
Total Questions: 42

Round: Interview
Experience: Questions from all CS subjects including coding
Tips: They shortlisted 29 students for the final interviews on Day 1 Slot 1.
There were 2 rounds of technical interview and 1 interview.

General Tips: Do’s
1)      Start right from August 
2)      Prepare basics of subjects
3)      Try to code using pen and paper
4)      Code as many problems as you can from all domains with only 1 language (C/C++/Java)
5)      Keep a friend with you at all times during interviews. If you are selected for more than 1 companies in 1 slot, ask your friend to manage your interview schedules given he knows your priorities. I was not in a position to attend more than 2 interviews in the same slot.
Don’ts
1)      Don’t lose hope if you are not shortlisted for your dream company or any company of your choice because being an IITian you have large number of better choices and which would fit in your profile better.
2)      Don’t argue with the interviewers and never pretend that your are over smart in a given domain.
3)      Do not take HR rounds lightly even if you are sitting for CS companies.
Skills: C++
College Name: IIT Kanpur
Motivation: Role of my interest
Interview experience
2
Poor
Difficulty level
Moderate
Process Duration
-
Result
Not Selected

I applied via Campus Placement and was interviewed in Aug 2023. There was 1 interview round.

Interview Preparation Tips

Interview preparation tips for other job seekers - round 1 : two coding questions of easy level + apptitude (english comprehensive, logical reasoning) + behavioural questions
round 2 : HR + technical combined ( asked your past experience with data handelling and tools used , asked some puzzles and gestimates)

GFG for puzzles, apptitude, english, logical resoning
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
2-4 weeks
Result
Not Selected

I applied via Referral and was interviewed in May 2024. There was 1 interview round.

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Interview experience
4
Good
Difficulty level
Hard
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed before Jul 2023. There were 3 interview rounds.

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-

I applied via Recruitment Consulltant

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
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MasterCard Interview FAQs

How to prepare for MasterCard Data Scientist interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at MasterCard. The most common topics and skills that interviewers at MasterCard expect are Information Security, SQL, Analytical Chemistry, Project Management and Information Technology.
What are the top questions asked in MasterCard Data Scientist interview?

Some of the top questions asked at the MasterCard Data Scientist interview -

  1. 3. How do you deal with senior customer when you don't have enough da...read more
  2. 1. How to choose optimum probability threshold from R...read more
  3. 2. How to test time series trend break ...read more

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MasterCard Data Scientist Salary
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₹11.2 L/yr - ₹33 L/yr
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MasterCard Data Scientist Reviews and Ratings

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Manager, Data Scientist

Gurgaon / Gurugram

10-12 Yrs

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Manager, Data Scientist

Gurgaon / Gurugram

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