All the interviews took place in their office in one day. Each interview panel was of 2 people.

1st Round:

• Questions on resume
• The project that I am currently working on in curr company
• Some questions on how would I handle certain scenarios such as bottlenecks
• DSA problem: Product of array except self(Brute->Optimal), was asked to handle edge cases and where would my code fail(-ve TC)
• Questions on Java Streams, Given an integer array, separate odd and even elements using a single stream.

The round went very well.

2nd Round:

• Started with asking: "Give any two scenarios where you did something and you were very proud of"
• Then went on to project discussion
• Why Redis and not in-memory K,V storage?
• A detailed discussion on Kafka and MQ in general
• Then I was asked which DS will I use to solve -> Find the nearest driver when a request comes when someone books a ride in Uber/Lyft.
• Again, detailed discussion around the project that I was working on in the company.
• Java Streams + Lambda discussion.

This round also went well.

3rd Round(HM):

• This was taken by Director + Senior EM
• Started with introduction
• Detailed discussion on the current project
• Was asked the Java version + Framework that I work in, and was asked to code something which I code in my company. (this is where I fumbled).
• Then their questions revolved around Java+SpringBoot+JPA, and they empasized on writing the code on pen and paper.
• Then a question which was expected to be solved by Java Streams, which I also bombed.
• Then they asked 2 sum problem, I went on from Brute force -> Sorting -> Optimal using HashMaps to which they said there might be millions of data and was asked not to use HashMap to which I said Sorting one was the most optimal.
• Then they asked why I wanted to switch etc etc for the last 2 mins.

I did not expect such in depth technical questions for HM round as well which I bombed and I knew this was the deal breaker for them, HR told it will be a general culture fit round and after a tiring day of offline interviews I felt like I could not have done any better.

I got rejection mail the next day, I really wanted to be a part of such a nice organization. All the people were so nice and warm throughout the interviews.

Hope this helps!