ALTRAN SOLUTIONS INDIA Senior Software Engineer Interview Questions and Answers

Q1. Tell me about yourself?
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Q2. Introduction round about yourself
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Q3. About work experience in past company
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Q1. What is Node.js event loop and how its work?
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Node.js event loop is a mechanism that allows Node.js to perform non-blocking I/O operations asynchronously.
• Event loop is responsible for handling asynchronous operations in Node.js.

• It allows Node.js to perform multiple operations simultaneously without blocking the execution.

• Event loop continuously checks the event queue for new events and executes them in a non-blocking manner.

• Callbacks are used to handle the complet
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Q2. DBMS questions like joins
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- Basic data structures questions.
- Node.js specific questions.

Q1. Basic managerial questions
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Q1. Explain some Design patterns
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Design patterns are reusable solutions to common problems in software design.
• Design patterns help in creating flexible, maintainable, and scalable software.

• Some common design patterns include Singleton, Factory, Observer, Strategy, and Decorator.

• Singleton pattern ensures a class has only one instance and provides a global point of access to it.

• Factory pattern creates objects without specifying the exact class of object...read more
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Q2. Explain Delegates , async/ await
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Delegates are type-safe function pointers in C# used for implementing callbacks. async/await is used for asynchronous programming in C#.
• Delegates in C# are similar to function pointers in C or C++. They allow methods to be passed as parameters to other methods.

• Async/await in C# is used for asynchronous programming, allowing methods to run asynchronously without blocking the main thread.

• Delegates can be used with async/
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Q1. What is a interceptor
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An interceptor is a design pattern commonly used in software development to capture and manipulate requests and responses.
• Interceptors can be used for logging, authentication, authorization, caching, error handling, etc.

• In Angular, interceptors can be used to modify HTTP requests before they are sent and responses before they are received.

• In Spring framework, interceptors can be used to intercept client requests and se
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Q2. What is Authentication, how to achieve it
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Authentication is the process of verifying the identity of a user or system.
• Authentication involves confirming the identity of a user through credentials such as passwords, biometrics, or security tokens.

• Common methods of authentication include single-factor authentication (e.g. password) and multi-factor authentication (e.g. password + SMS code).

• Authentication can be achieved through protocols like OAuth, OpenID, SAML...read more
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Q1. Basic Java and react question
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Q1. Little technical and project oriented question
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Basic hacker rank problem

Q1. Asked few questions on react and java
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Q1. Difference between patch and post
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Q2. Api gateway
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Q1. Get minimum from stream. Query based.
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Q2. Minimum number of platforms for trains. Arrival n departure time is given.
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Coding test was mainly based on some easy level leetcode questions

Q1. Technical was sql quesries , few questions around linkedlist, few around graphs and trees
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Q1. Java questions and basics of testing
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