Infosys

The OA consisted of 3 coding questions with a total duration of 180 minutes. There were 2 medium-level and 1 hard-level question. The questions were quite challenging, so you should be very well-versed with DSA to solve them efficiently. I was able to solve all 3 questions within 1.5 hours. Technical Round The OA result was released, and I was shortlisted for the L2 role. The technical interview was conducted at the company's Kolkata New Town office. I was notified about the interview around 8–9 days before the interview. The interviewer directly started with DSA and gave me 2 medium-level problems, which I had to code on LeetCode. It took me around 40 minutes to explain and code both problems. The questions were based on Insert Interval and Circular Tour. After that, he asked me some in-depth questions related to one of my projects, which was based on image processing. Unfortunately, I was not able to answer some of those questions. Then he gave me a medium-level SQL problem based on Confirmation Rate. I was able to explain the correct approach, but I forgot the syntax for the CASE statement and was not able to code it correctly. After that, he asked some basic API-related questions and two system design questions. The first was related to the Singleton Design Pattern, and the second was related to the Interface Segregation Principle. He also asked some basic questions related to cloud and sockets because I had used them in one of my projects. The overall interview duration was around 1.5 hours.