Confluent Software Engineer Interview Questions and Answers

Q1. Gave question on react due to issue with IDE they provided unable to provide solution
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Q1. Word formation Algorithm question
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Q2. Architecture of project.
Ans. 
The architecture of the project is based on microservices with a containerized approach using Docker and Kubernetes.
• Utilizes microservices architecture for scalability and flexibility

• Containerized approach using Docker for easy deployment and management

• Orchestrated with Kubernetes for automated scaling and monitoring
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Karat took 2 rounds of coding test

Q1. Tree based hard level question...
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Q2. Diameter of tree but nodes are strings
Ans. 
To find the diameter of a tree with nodes as strings, convert strings to integers for calculations.
• Convert strings to integers for calculations

• Use depth-first search to find the longest path between two nodes
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Q3. Design question LRU cache
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Q1. What would you use to build a web app?
Ans. 
To build a web app, I would use a combination of front-end technologies like HTML, CSS, and JavaScript, along with back-end technologies like Node.js, Express, and MongoDB.
• Front-end technologies: HTML, CSS, JavaScript

• Back-end technologies: Node.js, Express, MongoDB

• Frameworks: React, Angular, Vue.js

• Database: MySQL, PostgreSQL, MongoDB

• Version control: Git

• Deployment: AWS, Heroku, Netlify
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Coding - 1 hr, Graph

Coding - 1hr, Algo + Implementation, Bitwise, Prefix search, Intervals.

Coding - 1 hr, Implementation, Testing.

Q1. Details around projects.
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Q2. Standard Behavioural Questions.
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Coding - 1hr, Systems Design with coding, Multithreading.

4 questions, 1 easy, 2 medium, 1 hard.
based on stack, DP and String.

Q1. Based on OOPS 4 pillars.
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Q2. Based on spark and operating system as mentioned in my resume.
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Q3. Mostly on basic topics like DBMS, OOPS, OS, DSA (invert a binary tree, a medium string question).
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Q1. Explain the project done in internship.
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Q2. Explain spark architecture and related questions on architecture.
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60 minutes, CIDR network masks

Q1. Create APIs for a Quiz platform
Ans. 
Create APIs for a Quiz platform
• Design RESTful APIs for creating, updating, deleting, and retrieving quizzes

• Include endpoints for managing quiz questions, answers, and user responses

• Implement authentication and authorization mechanisms for secure access

• Utilize JSON format for data exchange between client and server
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