Blinkit interview experience Real time questions & tips from candidates to crack your interview
SDE - 1
Blinkit
3 rounds | 4 Coding
problems
Selected Interview preparation journey
Journey
My journey began in the second year of college, when I started exploring various domains like web development, machine learning, and other areas that excited me. In my third year, I interned at Edfora, an ed-tech company, and completed a summer research internship at IIITH before my fourth year. Due to extremely challenging market conditions and internal college criteria, I wasn't able to secure a placement through my college. I also chose not to apply to on-campus companies offering mediocre pay. However, I continued to apply off-campus and was fortunate to secure a remote internship at Atlan. In early May, Blinkit was actively hiring freshers, so I asked a friend to refer me, and I went through their rigorous interview process.
Application story
The application process involved a referral from a friend of mine who worked at Zomato, followed by resume screening. The manager then sent me an invite via email for the subsequent rounds.
Why selected/rejected for the role?
My previous projects and three technical internships, including a research internship at IIITH and a position at Atlan, an active metadata startup, helped me pass the resume screening.
Preparation
Duration: 6 Months
Topics: Data Structures, System Design, Scalable Systems, OOPS
Tip 1: Focus on fundamentals and the real-life application of technical concepts through projects.
Tip 2: Create projects that allow you to expand your horizons and challenge your abilities; aim for projects that are both interesting and innovative.
Tip 3: Rigorously practice data structures and algorithms, and develop a strong grasp of the basics.
Application process
Where: Referral
Eligibility: Previous internship or work experience is preferred, irrespective of college
Tip 1: Work on some standout projects.
Tip 2: Having strong internships on your resume creates a positive impact.
Interview rounds
01
Round
Medium
Video Call
Duration45 minutes
Interview date26 Apr 2024
Coding problem2
The first round was mainly focused on judging my problem-solving abilities. It was a direct interview with the manager of the team I was expected to join. I was expected to book a time slot for the online interview.
1. Beauty Shuffle
Problem approach
I created a function that creates a random number within a given range using time.time() function of python and applying modulus over the number to limit it within a range. To avoid duplicates, I saved the previous shuffle results in a set and called the created random function repeatedly till we got a unique number. The interviewer was satisfied with my approach and asked for time complexity of the same.
2. System Design
The interviewer asked for a thorough analysis of my internship project which I worked on during my tenure as a backend intern at Atlan.
Problem approach
Tip 1: Be thorough with your project
Tip 2: Gain deep insights into all the technologies used in your project
02
Round
Easy
Video Call
Duration30 minutes
Interview date7 May 2024
Coding problem1
This round was mostly based on my understanding of system design and how well was I able to create relationships between real-world entities to computer systems. The interviewer started with a LLD problem and moved on to the entity relation diagrams for the same problem followed by a brief discussion of my projects.
1. System Design
The interviewer asked me to write LLD for a movie ticket booking system with all essential classes wherever required to check my understanding of system design.
Problem approach
Tip 1: Practise LLD sample problems from the web and code their solutions
Tip 2: As a fresher, highly complex system design problems are not asked of the candidate
Tip 3: Ask for all the requirements needed in the design beforehand from the interviewer
03
Round
Medium
Video Call
Duration60 minutes
Interview date8 May 2024
Coding problem1
This was a culture fitment round for assessing my fit in Zomato's culture as a whole. This round was taken by an Engineering Manager at Blinkit and consisted of questions revolving around my personal experiences and learnings. I was mostly asked HR-related questions about compensation and future goals.
1. System Design
The interviewer did a deep dive into my knowledge of recently worked technologies, and as I had worked on RabbitMQ, we had an extremely detailed conversation on the usage of RabbitMQ and its differences to Kafka with benefits and flaws in the project I had worked upon as part of my internship
Problem approach
Tip 1: Be extremely thorough with your projects
Tip 2: Only share the tech stacks you have actually worked on in the interview
Tip 3: Be ready with answers to some common HR-related problems
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
Which SQL clause is used to specify the conditions in a query?
Choose another skill to practice
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