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MasterCard Technical Lead Interview Questions, Process, and Tips
Top MasterCard Technical Lead Interview Questions and Answers
- Q1. What is difference between Interface and abstract class?
- Q2. Parent child component communication in react?
- Q3. Can abstract class instantiated?
MasterCard Technical Lead Interview Experiences
2 interviews found
Anonymous
I applied via Referral and was interviewed in May 2024. There was 1 interview round.
(10 Questions)
- Q1. What is dependency injection?
- Ans.
Dependency injection is a design pattern in which components are given their dependencies rather than creating them internally.
Dependency injection helps in achieving loose coupling between classes.
It allows for easier testing by mocking dependencies.
There are three types of dependency injection: constructor injection, setter injection, and interface injection.
Example: Instead of a class creating an instance of another...
- Q2. What is app.use in .net core?
- Ans.
app.use in .NET Core is used to add middleware to the request pipeline.
app.use is a method used in ASP.NET Core to add middleware components to the request pipeline.
Middleware components are software components that are executed in the request pipeline to handle requests and responses.
Middleware components can perform tasks such as authentication, logging, error handling, and more.
Example: app.use(new MiddlewareCompone
- Q3. What is difference between Interface and abstract class?
- Ans.
Interface is a contract that defines the methods a class must implement, while abstract class can have both abstract and concrete methods.
Interface cannot have any implementation, while abstract class can have both abstract and concrete methods.
A class can implement multiple interfaces but can only inherit from one abstract class.
Interfaces are used to achieve multiple inheritance in Java, while abstract classes are us...
- Q4. Boxing Unboxing
- Q5. ArrayList and List
- Q6. Can abstract class instantiated?
- Ans.
No, abstract classes cannot be instantiated.
Abstract classes are meant to be inherited and extended by other classes.
Attempting to instantiate an abstract class will result in a compilation error.
Abstract classes can have abstract methods that must be implemented by the subclass.
- Q7. How to optimize react application?
- Ans.
Optimizing a React application involves code splitting, lazy loading, minimizing bundle size, using memoization, and optimizing render performance.
Implement code splitting to load only necessary code for each route or component.
Utilize lazy loading to defer loading of non-essential components until they are needed.
Minimize bundle size by removing unused code, optimizing images, and using tree shaking.
Use memoization te...
- Q8. Props destructuring?
- Q9. Parent child component communication in react?
- Ans.
Parent child component communication in React involves passing data from parent to child components and triggering events from child to parent components.
Use props to pass data from parent to child components
Use callback functions to trigger events from child to parent components
Context API can be used for passing data to deeply nested components
- Q10. What is useRef, useMemo, useCallback?
- Ans.
useRef is used to persist a value across renders, useMemo is used to memoize expensive calculations, useCallback is used to memoize functions.
useRef is commonly used to access DOM elements or persist values between renders.
useMemo is used to memoize expensive calculations to avoid re-computation.
useCallback is used to memoize functions to prevent unnecessary re-renders.
Example: useRef can be used to store a reference t...
Interview Preparation Tips
Although you are experienced, you can expect OOPS concept complex questions.
Be prepared with all concepts.
Skills evaluated in this interview
Dipal Vekariya
(3 Questions)
- Q1. Recursion program
- Q2. System Design questions based on current project
- Q3. Micro service design patterns
- Ans.
Micro service design patterns are architectural patterns used to design and implement microservices.
Service discovery
Circuit breaker
API gateway
Event sourcing
Saga pattern
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
Prasad Saitwal
Data structures related to dynamic program
React coding test . Design drop-down
(1 Question)
- Q1. Tell me about yourself?
- Ans.
Experienced technical lead with a strong background in software development and project management.
Over 8 years of experience in leading technical teams and delivering successful projects
Proficient in various programming languages such as Java, Python, and JavaScript
Skilled in Agile methodologies and implementing best practices for software development
Strong communication and leadership skills, able to collaborate effe
(2 Questions)
- Q1. COBOL functions.
- Q2. File Management
Interview Preparation Tips
Selected
I applied via Naukri.com and was interviewed in Aug 2023. There were 4 interview rounds.
(2 Questions)
- Q1. Core java related questions
- Q2. Sql how to remove duplicate record from table?
- Ans.
Use a SELECT statement with a GROUP BY clause to remove duplicate records from a table.
Use the DISTINCT keyword in a SELECT statement to retrieve unique records.
Use the GROUP BY clause with appropriate columns to group duplicate records together.
Consider using the ROW_NUMBER() function to assign a unique number to each row and then filter out duplicates based on this number.
(1 Question)
- Q1. Career asipiration
(1 Question)
- Q1. Salary expectations
Interview Preparation Tips
Skills evaluated in this interview
I applied via LinkedIn and was interviewed in Jul 2023. There were 3 interview rounds.
1. One question regarding the MaxPartitions for a given array, if array is [4, 3, 2, 6 , 5, 10, 9] => upon sorting it appears like [2, 3, 4, 5, 6, 7, 9, 10] ..Max slices are [2,3,4] [5, 6] [9, 10] so slice count is 3
2. Another one Max integer upon removal 5 digit
(1 Question)
- Q1. Two technical rounds happened 1. One technical round : It was all about the Architecture , Design patterns on Microservices like CircuitBreaker etc and also security concepts, 2. Another technical round...
Interview Preparation Tips
(1 Question)
- Q1. Design YT recommendation system
- Ans.
Designing a recommendation system for YouTube
Utilize collaborative filtering to recommend videos based on user preferences
Incorporate content-based filtering to suggest videos similar to ones previously watched
Implement a hybrid approach combining collaborative and content-based filtering for more accurate recommendations
Skills evaluated in this interview
(2 Questions)
- Q1. Tell about your cloud project?
- Q2. Explain which cloud u worked on ?
- Ans.
I have worked on AWS (Amazon Web Services) cloud platform.
Utilized various AWS services such as EC2, S3, RDS, and Lambda
Implemented infrastructure as code using CloudFormation
Managed security groups and IAM roles for access control
Optimized cost by utilizing spot instances and reserved instances
Interview Preparation Tips
Skills evaluated in this interview
I applied via Referral and was interviewed in Feb 2024. There were 2 interview rounds.
Find duplicates in a array
(2 Questions)
- Q1. PRoduct array itself
- Ans.
A product array is an array of strings representing different products.
Each element in the array is a string representing a product
Example: ['iPhone', 'Samsung Galaxy', 'Google Pixel']
Can be used to store and manipulate a list of products
- Q2. Search in rotated binary search
- Ans.
Search for a target value in a rotated sorted array using binary search
Find the pivot point where the array is rotated
Determine which half of the array the target value lies in
Perform binary search on the appropriate half of the array
Skills evaluated in this interview
2 programs on data structure
(1 Question)
- Q1. Questions on java and spring boot.
Interview Preparation Tips
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MasterCard Technical Lead Interview Process
based on 2 interviews
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