Confluent Senior Software Engineer Interview Questions and Answers

Q1. Questions on basis of elastic search
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Q1. Design pattern experience
Ans. 
I have extensive experience with various design patterns such as Singleton, Factory, Observer, and MVC.
• Implemented Singleton pattern to ensure only one instance of a class exists

• Utilized Factory pattern to create objects without specifying the exact class

• Implemented Observer pattern for event handling and notifications

• Utilized MVC pattern for separating concerns in a software application
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Question on dsa and string theory along with oops concepts

Q1. Question on java strings and arrays
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Q1. Data Structures and Algorithms easy question like two sum.
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Q2. Data Structures and Algorithms medium - hard question like product of array except self.
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System Design - Standard.

Q1. You need to discuss why you are interested in the role
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Q1. How can we improve the performance of a Front End System
Ans. 
Improving Front End System Performance
• Optimize images and reduce their size

• Minimize HTTP requests and use caching

• Use lazy loading for images and videos

• Reduce the number of DOM elements

• Use a Content Delivery Network (CDN)

• Minimize the use of external scripts and plugins

• Use asynchronous loading for scripts

• Optimize CSS and JavaScript files

• Use browser caching

• Implement server-side rendering
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Q2. What is Event Loop and give an example on how it works.
Ans. 
Event Loop is a mechanism that allows JavaScript to handle multiple tasks simultaneously.
• Event Loop is a part of JavaScript runtime that continuously checks the call stack and the task queue.

• It prioritizes the tasks in the queue and pushes them to the call stack when it's empty.

• This allows JavaScript to handle I/O operations and other asynchronous tasks without blocking the main thread.

• Example: setTimeout() function ad...read more
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