Mastercard Pune | Sr SDET interview Experience

Round 1: Hiring Manager - Technical Screening

Questions:

• Basic Java questions such as:
  • Reverse a string
  • Write XPath

The interviewer provided details about the product and explained the main roles and responsibilities.

Round 2: Technical Interview

Questions: Part A: Java Concepts Questions

1. What are different ways to create an object in Java?
2. Can we create an object of an abstract class?
   • Answer: No
   • Follow-up: Does an abstract class have a default constructor?
     • Answer: Yes
   • Follow-up: If an object cannot be created from an abstract class, then why do we have a constructor in an abstract class?
3. Can we have a final constructor in Java?
4. Can we have a static constructor in Java?

Part B: Coding Questions

1. What will be the output of the below code?

   String s = 21 + "abc" + 49 + 14;
   System.out.println(s);

2. What will be the 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 has all elements from array 1 and array 2. The condition is that you can use a for loop only once while solving the 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 an array.
   • Input: array: {18, 45, 7, 10, 5}
   • Output: array: {45, 18, 10, 7, 5}

In this round, the candidate was able to answer all coding questions correctly but struggled with a few Java concepts. At the end of the interview, the interviewer inquired about the candidate's availability to join and explained the main roles and responsibilities of the position.

Final Verdict: Not selected
Compensation: The candidate believes the compensation range for the Sr SDET role with 7+ years of experience at Mastercard is around 25 LPA (including 10% variable).