LeetCode Experience · Dec 2024 · Los Angeles

Mastercard Pune | Sr SDET interview Experience

QA Recruiter Senior Easy
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Interview Experience

Application Process: I applied on mastercard through mastercard Career portal. MasterCard Hiring Process Overview: https://careers.mastercard.com/us/en/mastercards-hiring-process **First Round: Hiring Manager :Technical Screening - 30 mins interview was taken where basic java questions like reverse...

Full Details

Application Process: I applied on mastercard through mastercard Career portal.

MasterCard Hiring Process Overview: https://careers.mastercard.com/us/en/mastercards-hiring-process

First Round: Hiring Manager :Technical Screening

  • 30 mins interview was taken where basic java questions like reverse string, write XPath etc was asked.
  • Interviewer was very good. He explained me details of the product I would working on and my main roles and responsibilities

Second Round : Technical Interview :1 hour

  • Most question were tricky java questions. Nothing much was asked about selenium, Playwright, Restassured, design patterns etc.

PartA: Java Concepts Questions
1) What are different ways to create object in java
2) Can we create object of abstract class? Answer - No

Follow up question: Does abstract class have default constructor?? Answer - Yes

Follow up question: if object cannot be created from abstract class then why we have constructor in abstract class?.
3) Can we have final constructor in java?
4) Can we have static constructor in java?

PartB: Coding
1) What will be output of the below code
String s= 21+"abc"+ 49 +14;
System.out.println(s) ;

2) What will be output of the below code
String s= 21+ 49+"abc"+ 14;
System.out.println(s) ;

3) Fizz buzz problem

4) Suppose there are 2 arrays having integers. Create array number 3 which have all elements from array 1 and array 2. there is 1 condition that you can use for loop only once while solving problem
Input : arr1 : {1,2,3,4, 5} & arr2 : {6,7,8,9,10}

Output : arr3 : {1,2,3,4, 5, 6,7,8,9,10}

5) Swap immediate elements in array
Input : array : {18,45, 7,10,5}

Output : array :{45,18,10,7,5}

In Second round of interview I was able to answer all coding questions correctly but in few java concepts I didnt answered correctly. At the end of interview , the interviewer asked me how early I can join, He Explained my my main roles and resposibilities in this role. I felt I will pass through this round By i never got callback from HR

Final Verdict: Not selected

Compensation:: I think compenation range in mastercard for Sr sdet role with 7+ yrs exp is around 25 LPA(including 10% variable).

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About This Question

This is a candidate experience report from a mastercard interview for a qa role (senior level) during the recruiter round reported in 2024.

It covers the following topics: Arrays, Oop, Sql, Strings .

Difficulty rating: Easy

About Mastercard Interview Reports

This question was reported by a candidate who interviewed at Mastercard. LeakCode aggregates interview reports from 10+ sources, including 1Point3Acres, Glassdoor, LeetCode Discuss, Blind, Reddit, Indeed, and Nowcoder. Each report is translated where necessary, deduplicated against existing entries, and tagged by company, role, round type, and reporting date.

Use this question as one calibration data point, not a memorization target. Companies typically rotate their question pools every 2-4 months; the exact wording of a 2024 question may differ from what you encounter today. The underlying pattern, difficulty level, and follow-up depth at Mastercard are the higher-signal extractions to take from this report.

For broader preparation context, the Mastercard interview process typically includes a recruiter screen, one or two technical phone screens, and a 4-5 round on-site loop covering coding, system design (at L4+ levels), and behavioral. Reports tagged on LeakCode show the round-by-round distribution and typical difficulty calibration. To browse questions filtered by round type and seniority, use the company hub linked above.

How To Practice This Type of Question

Solve similar problems on LeetCode under timed conditions (25-35 minutes per medium difficulty). The goal is pattern recognition: recognize the underlying technique (sliding window, two-pointer, BFS, memoized recursion, etc.) within 60-90 seconds of reading. Strong candidates verbalize their hypothesis out loud before coding, then iterate based on feedback. Weak candidates dive into implementation immediately, lose time on the wrong approach, and run out of time for follow-ups.

Companies update their question pools every 2-4 months. The exact wording of any given question may have been retired by the time you interview. Focus your prep on the pattern, not the specific problem. The patterns that appear in Mastercard reports consistently are the ones worth investing in; one-off niche problems are not.

During Your Mastercard Round

Apply the standard interview round template: clarify requirements (2-3 minutes), state your approach out loud and confirm direction with the interviewer (3-5 minutes), code with narration (15-25 minutes), test with concrete examples including edge cases (5 minutes), discuss optimization or trade-offs if time permits (5 minutes). This template is universally accepted across FAANG and adjacent companies; deviating from it produces weaker interviewer feedback signal.

The single most predictive failure mode in Mastercard reports tagged "no hire": not asking clarifying questions. Interviewers are explicitly trained to weight this. Strong candidates ask 3-5 clarifying questions even on problems that look obvious; weak candidates dive into code immediately. The clarifying-question check is often the first signal recorded in the interviewer's written notes.