Indexnine Technologies Senior Software Engineer Interview Questions and Answers

Q1. What is list comprehension
Ans. 
List comprehension is a concise way to create lists in Python by applying an expression to each item in an iterable.
• List comprehension is written inside square brackets []

• It consists of an expression followed by a for clause, then zero or more if clauses

• Example: squares = [x**2 for x in range(10)]
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Q2. Explain spark architecture
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Apache Spark is a distributed computing system that provides an interface for programming entire clusters with implicit data parallelism and fault tolerance.
• Apache Spark follows a master-slave architecture with a driver program that communicates with a cluster manager to distribute work across worker nodes.

• It uses Resilient Distributed Datasets (RDDs) as the basic data structure, which are immutable distributed collect...read more
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Write code for palindtomr

Find the kth minimum element in the array

Q1. Design a online food delivering system
Ans. 
Design an online food delivering system for ordering and delivering food from restaurants to customers.
• Allow customers to browse menus and place orders online

• Provide options for delivery or pickup

• Include payment processing and order tracking

• Integrate with restaurants for menu updates and order notifications
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Q2. High level design of sync of google drive
Ans. 
Syncing Google Drive involves designing a system to keep files updated across devices and platforms.
• Implement a client-server architecture where changes are detected and synced between the Google Drive server and client devices.

• Utilize APIs provided by Google Drive for authentication, file manipulation, and syncing.

• Consider conflict resolution strategies for cases where the same file is edited on multiple devices.

• Imple...read more
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Q1. Maching Coding - Factory design patter
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Q2. Multi-Threading : Object level and class level lock
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Q3. Distributed Caching
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Q1. Tell me your project details
Ans. 
Developed a web application for online shopping with user authentication and payment gateway integration.
• Used React.js for front-end development

• Implemented user authentication using JWT tokens

• Integrated Stripe API for payment processing
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Q1. Oops concepts explained
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Q1. Optimization Techniques
Ans. 
Optimization techniques are methods used to improve the efficiency and performance of software applications.
• Use of algorithms like dynamic programming and greedy algorithms

• Profiling and performance tuning to identify bottlenecks

• Code refactoring to improve readability and maintainability

• Utilizing caching and memoization for faster access to data

• Parallel processing and multi-threading for improved concurrency
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Mostly they asked questions on String or basic coding questions

Q1. Core java questions basics, SpringBoot Microservice ,Sql questions
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Q1. Mostly questions on core java, day to day activities , agile,beghavioural questions
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Q1. Salary Expectation
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Hackathon Test with 2 medium level coding question.

Technical Video Interview- Java concepts mostly related to Java 8, 1 coding program and some db questions were asked.

Q1. Questions related to System Design.
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Q1. Questions related to my projects . Some questions related to my current role and responsibilities.
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Q1. Explain Project Architecture
Ans. 
Project architecture refers to the high-level structure of a software system, including components, relationships, and interactions.
• Project architecture defines how different components of a software system interact with each other.

• It includes the design decisions related to the organization of code, data, and resources.

• Common architectural patterns include MVC, microservices, and serverless.

• Architectural diagrams like...read more
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Q2. Springboot components
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Q3. Angular Lifecycle
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Anagram, Pythagorean triplets

Js coding test with modifications