Codewave Technologies interview experience Real time questions & tips from candidates to crack your interview
Frontend Developer
Codewave Technologies
1 rounds | 3 Coding
problems
Rejected
Interview preparation journey
Application story
I was referred by a friend from the company Codewave. The opening was for a Frontend Developer role requiring proficiency in MERN technologies, and the position was based in Bangalore. During the interview, I was initially asked basic questions, followed by more in-depth questions on certain topics.
Preparation
Duration: 2 months
Topics: React.js, JavaScript, HTML, CSS, Context API, State Management, Basic DSA, Algorithms
Tip 1: Prepare React from the basics to the advanced.
Tip 2: Prepare JavaScript up to the advanced level.
Tip 3: Practice interview questions from Code360.
Application process
Where: Referral
Eligibility: BE/BTech in any branch, (Salary Package: 3 LPA)
Tip 1: Include the skills mentioned in the job description.
Tip 2: Prepare a project summary for the projects listed in your resume.
Interview rounds
01
Round
Hard
Online Coding Interview
Duration50 minutes
Interview date25 Aug 2025
Coding problem3
1. React Concepts
- Can React be used in production?
- What are an accumulator and an aggregator in MongoDB?
- What are functional components and class components in React? (Learn)
- What is the Virtual DOM, and how does React use it? (Learn)
- Explain React's rendering process. When does a component re-render?
- What is useEffect? Explain its dependency array. (Learn)
- What is CSR (Client-Side Rendering) vs. SSR (Server-Side Rendering)?
- What is the difference between local state, global state, and derived state?
- What is debouncing? Explain it with an example. (Learn)
- Explain error boundaries in React.
2. React Counter
Build a small counter app using useState and useEffect.
3. Number Printing
Write the numbers from 11 to 67 without using a loop.
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 recursion?
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