Winjit Technologies Senior Software Engineer Interview Questions and Answers

Q1. Difference between Sanity & Smoke
Ans. 
Sanity testing is a subset of regression testing, while smoke testing is a subset of acceptance testing.
• Sanity testing is performed to ensure that the critical functionalities of the software are working as expected.

• Smoke testing is performed to verify if the software build is stable enough for further testing.

• Sanity testing is usually performed after major changes or bug fixes.

• Smoke testing is performed on each build ...read more
Answered by AI
Add your answer

Q1. Basic questions on Javascript like closure, event loop,hoisting and some coding questions on map,filter, reduce
Add your answer
Q2. Basic conceptual questions on React, redux
Add your answer

Q1. Coding questions on JS and React
Add your answer

Q1. Salary Expectation
Add your answer

Q1. What are closures
Ans. 
Closures are functions that have access to variables from their containing scope even after the scope has closed.
• Closures allow functions to access variables from their outer function even after the outer function has finished executing.

• They are commonly used in event handlers, callbacks, and asynchronous programming.

• Closures help in maintaining state in functional programming.
Answered by AI
Add your answer
Q2. What is virtual DOM
Ans. 
Virtual DOM is a lightweight copy of the actual DOM used for efficient updates in web development.
• Virtual DOM is a concept used in frameworks like React to improve performance by minimizing actual DOM manipulations.

• When changes are made to the virtual DOM, a comparison is done with the actual DOM to determine the minimal updates needed.

• This approach reduces the number of costly DOM operations, resulting in faster rende
Answered by AI
Add your answer
Q3. What are the data types in JS
Ans. 
Data types in JavaScript include number, string, boolean, object, function, undefined, and null.
• Number - represents numeric data, e.g. 10, 3.14

• String - represents textual data, e.g. 'hello', '123'

• Boolean - represents true or false values, e.g. true, false

• Object - represents complex data structures, e.g. { key: 'value' }

• Function - represents executable code, e.g. function() { }

• Undefined - represents a variable that has ...read more
Answered by AI
Add your answer

Q1. Write react code for counter
Ans. 
React code for a simple counter
• Create a functional component for the counter

• Use useState hook to manage the count state

• Render the count value and buttons to increment and decrement the count
Answered by AI
Add your answer

Q1. Salary discussion
Add your answer

Q1. Basic javascript questions and basic node js questions
Add your answer
Q2. Basic programming questions
Add your answer

Q1. They will check In depth architecture understanding of the products you have worked
Add your answer
Q2. Test your Critical thinking by asking how you manage the load and multiple systems interaction, asyc programming
Add your answer

Q1. Salary expectation, and attitude and behaviour test
Add your answer

Basic questions easy to crack. Basic programming knowledge.

Q1. Oops questions, multithreading, Exception , String .
Add your answer

Q1. About salary discussion only
Add your answer