4 Way Technologies INC interview experience Real time questions & tips from candidates to crack your interview
Frontend Developer Intern
4 Way Technologies INC
4 rounds | 5 Coding
problems
Selected Interview preparation journey
Journey
My overall journey was full of ups and downs, but in the end, it worked in my favor. I started my journey in 2023 with web development, moved to DSA in 2024, and now, in 2026, I have solved more than 450 DSA questions and completed full-stack development using the MERN stack. I am currently working on data engineering.
Application story
The overall hiring journey went smoothly and was completed within a month. I joined 4way Technologies on the 8th of December. I primarily focused on web development and communication skills for this company.
Preparation
Duration: 12-15 months
Topics: C++, JavaScript, React.js, Node.js, Express.js, SQL, MongoDB
Tip 1: Prepare both development and DSA; any company can ask anything.
Tip 2: If you are aiming for an early-stage startup, focus primarily on development.
Tip 3: Communication and confidence are very important in interviews; one should do mock interviews regularly.
Application process
Where: Campus
Eligibility: Above 7 CGPA, (Salary Package: 20,000/- in Intern and 3.48 in Full Time)
Tip 1: Don’t add a summary or a profile picture to your resume.
Tip 2: Keep your resume to one page; it should not exceed a single page.
Interview rounds
01
Round
Medium
Online Coding Interview
Duration60 minutes
Interview date3 Nov 2025
Coding problem1
1. JS Fundamentals
- What does <!DOCTYPE html> do? (Learn)
- What is a closure in JavaScript? (Learn)
- What is the difference between == and ===? (Learn)
- What is the difference between localStorage and sessionStorage? (Learn)
- What is the result of typeof NaN?
- What causes a re-render in React?
- What is debouncing? (Learn)
- What is a memory leak?
- What is throttling?
02
Round
Easy
Face to Face
Duration15 minutes
Interview date3 Nov 2025
Coding problem2
1. Array Mapping
Given an integer array arr and a mapping function fn, return a new array with a transformation applied to each element.
The returned array should be created such that returnedArray[i] = fn(arr[i], i).
Solve this without using the built-in Array.map method.
2. JS Concepts
- Which UI libraries have you used?
- What is a Promise, and what is Promise.all?
- What is the difference between a Promise and async/await? (Learn)
- What is the difference between var, let, and const? (Learn)
03
Round
Easy
Face to Face
Duration30 minutes
Interview date17 Nov 2025
Coding problem1
1. React Concepts
- What are the different hooks in React? (Learn)
- Can you explain the React lifecycle? (Learn)
- What is reconciliation in React, and what makes React fast?
- Can you explain the JavaScript event loop?
- What are the different types of queues in JavaScript?
- What is hoisting?
- What is the Virtual DOM?
- Can you explain a project you built?
- What is the difference between deep copy and shallow copy? (Learn)
04
Round
Easy
HR Round
Duration10 minutes
Interview date17 Nov 2025
Coding problem1
1. HR questions
- What are your strengths and weaknesses?
- What is your tech stack?
- Why do you want to join our company?
- Can you describe a challenge you faced and how you handled it?
- Where do you see yourself in the next five years?
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
What is the best case time complexity of Bubble Sort?
Choose another skill to practice
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