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I applied via Campus Placement and was interviewed in Sep 2024. There was 1 interview round.
2 coding questions, 1hr
To delete duplicate values, use SQL queries with DISTINCT keyword or programming languages like Python with sets.
In SQL, use SELECT DISTINCT to retrieve unique values
In Python, convert list to set to automatically remove duplicates
Use pandas library in Python to drop duplicates in a DataFrame
I applied via Job Portal and was interviewed in Mar 2024. There were 5 interview rounds.
Java code to find number of repeated characters in a String.
Create a HashMap to store characters and their counts.
Iterate through the String and update the counts in the HashMap.
Count the characters with counts greater than 1 to find repeated characters.
Design patterns in Microservices are reusable solutions to common problems encountered in designing and implementing microservices architecture.
Design patterns help in structuring microservices for scalability, resilience, and maintainability.
Some common design patterns in microservices include Service Registry, Circuit Breaker, API Gateway, and Event Sourcing.
Service Registry pattern involves a central registry that a...
Design discussion for use case
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I appeared for an interview in Feb 2025, where I was asked the following questions.
The event loop is a programming construct that manages asynchronous operations in JavaScript and other languages.
The event loop allows non-blocking I/O operations, enabling efficient handling of multiple tasks.
It works by continuously checking the call stack and the message queue.
When the call stack is empty, the event loop takes the first message from the queue and executes its associated callback.
Example: In JavaScri...
MasterCard interview questions for popular designations
I applied via Company Website and was interviewed in May 2024. There was 1 interview round.
Yes, KPIs are key performance indicators used to measure the success of a product or project.
KPIs are specific metrics used to evaluate the performance of a product or project.
They help track progress towards goals and objectives.
Examples of KPIs include conversion rates, customer satisfaction scores, and revenue growth.
KPIs should be aligned with the overall business strategy and objectives.
Agile product development involves iterative and incremental development cycles to quickly deliver value to customers.
Cross-functional teams work in short iterations called sprints
Prioritize features based on customer feedback and business value
Regularly review and adapt to changes in requirements
Deliver working software frequently, typically every 2-4 weeks
Get interview-ready with Top MasterCard Interview Questions
I applied via Company Website and was interviewed in May 2024. There were 3 interview rounds.
First round was screening of resume and few basic coding questions
In second round there is 3 panels at same day for 3 hours one after one all there round are technical and coding interviews level is hard one after another round. Situational questions and current project details in deep. Be prepare for coding.
Micro service design patterns are architectural patterns used to design and implement microservices.
Service discovery
Circuit breaker
API gateway
Event sourcing
Saga pattern
I applied via Campus Placement and was interviewed in Sep 2024. There was 1 interview round.
Interview: resume,puzzles, guesstimates
Design a calendar system for scheduling events and managing time.
Include features like creating events, setting reminders, and viewing schedules.
Allow users to set recurring events and customize event details.
Implement a user-friendly interface for easy navigation and interaction.
Integrate with other applications for seamless data sharing.
Consider scalability and performance for handling large amounts of data.
I applied via LinkedIn and was interviewed in Aug 2024. There were 2 interview rounds.
Aptitude questions asked about basic stuff
Some of the top questions asked at the MasterCard interview -
The duration of MasterCard interview process can vary, but typically it takes about less than 2 weeks to complete.
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