Coupa Software SDET Interview Experience | Full-Time (Fresher)

I applied off-campus and here’s a breakdown of my experience:

Online Assessment (OA):

The process started with an OA round consisting of some MCQs and 3 coding questions of easy to medium difficulty.

Interview Rounds:

On the interview day, I had 3 rounds of interviews, each lasting 1 hour with an hour’s interval between them.

1st Round:

• I was asked to find the missing integer in an array.
• We had a discussion on OOPs concepts like Inheritance, and the difference between Abstraction and Encapsulation.
• I answered technical questions related to class-based vs functional components.
• Concepts like cookie vs local storage vs session storage were discussed.
• I was asked about Redux Toolkit and how it works.
• The interviewer explored my projects and work experience.
• There were database-related queries, including schema design and API calls.

2nd Round:

• I was given a challenging SQL query that required finding average price with some joins.
• I was asked about Radix Sort.
• There were questions on REST APIs, including PUT vs PATCH and GET vs POST methods.
• The discussion focused on database optimization.
• We had a discussion on MySQL vs MongoDB—when to use each, and I was given a situation involving a website to decide which database would be more suitable and why.
• I designed an LLD (Low-Level Design) for an elevator system.
• More questions were asked about my previous projects.

3rd Round:

• We discussed my work at the previous company.
• Continued focus on database optimization and API calls.
• I answered questions on debouncing, lazy loading and Caching.
• I solved the problem: Longest Substring Without Repeating Characters.
• I also solved the classic jar puzzle (link: Find the Jar with Contaminated Pills).
• I walked through the frontend code of my projects.
• We explored polymorphism, with a focus on the virtual keyword.
• Finally, the question Why Coupa? was asked to wrap things up.

It was a mix of DSA, SQL, system design, REST API concepts, and puzzles, with a strong focus on my past experience and projects.

I received the offer on the same day, just 1.5 hours after completing the interviews! I am grateful for the opportunity to learn and grow through this process and super excited to start my journey with Coupa Software!