PayU Software Development Engineer 2 Interview Experience
Software Development Engineer 2
Summary
AI Powered
The PayU interview process for the Software Engineer (Frontend) position included one round, focused heavily on technical questions related to JavaScript, React, and Redux. Candidates can expect to address topics ranging from variable declarations, functions, and hooks to deep copying techniques. The overall difficulty level was medium to hard, as various complex concepts were explored, giving candidates a rigorous assessment of their knowledge at PayU.
1
#1Differences Between Variable Declarations
Medium
javascript
variables
hoisting
Explain the differences between `let`, `const`, and `var`, and include an explanation of hoisting concepts.
#1
Differences Between Variable Declarations
Explain the differences between `let`, `const`, and `var`, and include an explanation of hoisting concepts.
javascript
variables
hoisting
Medium
#2Arrow Functions vs. Regular Functions
Easy
javascript
functions
es6
Identify the key differences between arrow functions and regular functions in JavaScript.
#2
Arrow Functions vs. Regular Functions
Identify the key differences between arrow functions and regular functions in JavaScript.
javascript
functions
es6
Easy
#3Deep Copy vs. Shallow Copy
Medium
javascript
data-structures
Discuss the differences between deep copy and shallow copy, including examples.
#3
Deep Copy vs. Shallow Copy
Discuss the differences between deep copy and shallow copy, including examples.
javascript
data-structures
Medium
#4Higher-Order Components (HOCs)
Medium
react
hoc
What are Higher-Order Components (HOCs) in React, and what are their advantages? Why are they less commonly used nowadays?
#4
Higher-Order Components (HOCs)
What are Higher-Order Components (HOCs) in React, and what are their advantages? Why are they less commonly used nowadays?
react
hoc
Medium
#5CORS Errors
Medium
cors
web-development
What is a CORS error, when does it occur, and how can it be resolved from the frontend?
#5
CORS Errors
What is a CORS error, when does it occur, and how can it be resolved from the frontend?
cors
web-development
Medium
#6Hooks in React
Medium
react
hooks
Name some hooks you’ve used in React. Explain the use of `useContext`, `useMemo`, `useRef`, and `useState`.
#6
Hooks in React
Name some hooks you’ve used in React. Explain the use of `useContext`, `useMemo`, `useRef`, and `useState`.
react
hooks
Medium
#7Understanding Redux
Medium
redux
state-management
What is Redux, and why is it used in applications?
#7
Understanding Redux
What is Redux, and why is it used in applications?
redux
state-management
Medium
#8Redux Thunk Explanation
Medium
redux
async
What is Redux Thunk, and why is it used alongside Redux?
#8
Redux Thunk Explanation
What is Redux Thunk, and why is it used alongside Redux?
redux
async
Medium
#9Closure Explanation
Medium
javascript
closures
Explain the concept of closures in JavaScript with an example.
#9
Closure Explanation
Explain the concept of closures in JavaScript with an example.
javascript
closures
Medium
#10Building a React Project
Medium
react
build-optimization
How do you build a React project, and what techniques can you use to optimize the build files?
#10
Building a React Project
How do you build a React project, and what techniques can you use to optimize the build files?
react
build-optimization
Medium
#11Using Custom Hooks
Medium
react
hooks
When have you used custom hooks in your projects? Provide examples if possible.
#11
Using Custom Hooks
When have you used custom hooks in your projects? Provide examples if possible.
react
hooks
Medium
#12Deep Copy Function
Hard
javascript
deep-copy
Write a function from scratch that creates a deep copy of any kind of object.
#12
Deep Copy Function
Write a function from scratch that creates a deep copy of any kind of object.
javascript
deep-copy
Hard
r
ritwik chakraborty
Verified User