Groww SDE Intern Interview Experience
Recently appeared for the Groww on-campus interview
Role: SDE (backend)
College : VIT-AP
The interview process had 3 rounds:
- Round 1 - DSA
- Round 2 - Projects + Core Subjects
- Round 3 - HR + System Design
Here’s how each round went.
Round 1 - DSA
Duration: ~1 hour
Format: Live coding
Questions: 2
The round started with a basic introduction, and then the interviewer shared the links to the problems that I had to solve.
Q1. Best Time to Buy and Sell Stock II
LeetCode - Best Time to Buy and Sell Stock II
Difficulty : medium
Q2. Candy
Difficulty : hard
I was asked to explain my approach and dry run on a few testcases
Round 2 - Projects Discussion + Core Subjects
Duration: ~40 minutes
This round started with an introduction to the projects I had mentioned in the resume.
Some of the questions were:
- Explain the database schema of your project.
- Why did you choose this particular tech stack?
- Why did you choose a NoSQL database?
- How did you prevent race conditions?
- How does the overall architecture work?
- How does one component communicate with another?
For around the first 20 minutes or so, the discussion was mostly around the database design, architecture and implementation details of the projects.
I was also asked for a few SQL queries based on different scenarios from the project.
The project discussion ended up covering quite a few OOPS and DBMS concepts as well.
Then the interviewer moved towards some real-world scenarios.
For example:
How would you implement a payment feature where a user could have different types of discounts — coupons, credit card discounts, etc.?
After that, there were a few questions from Computer Networks and Operating Systems.
Round 3 — HR + System Design
Duration: ~50 minutes
This round started with the usual questions:
- Tell me about yourself.
- Tell me about your college.
- Tell me about your academics.
Then we went back to the projects.
Again, the discussion went kinda deep into the implementation details.
Some of the questions were:
- Explain the OTP lifecycle in your project.
- How would you handle multiple users?
- How did you ensure concurrency?
- How did you implement chats in your project?
- How does the system behave when multiple requests arrive simultaneously?
And there were quite a few follow-up questions for each of these.
System Design
There was also a basic system design question:
How would you design an Event Management System?
The discussion included things like:
- Overall architecture
- Entities
- APIs
- Database
- Concurrency
- Transactional functionality
The interviewer also asked me to explain the transactional functionality in detail, followed by a few scenario-based questions and follow-ups.
HR Questions
Some of the questions were:
- What is your strongest domain in tech?
- Rate yourself in your strongest domain out of 5.
- What is your weakest domain in tech?
- Where do you see yourself in the next 5 years, technically and non-technically?
- Why Groww?
- What's your dream company?
- How would you deal with disputes within a team?
And, there were follow-ups for almost every answer.
That was my Groww on-campus interview experience :)
