Group: Payment/Settlement

First, a HackerRank link with 21 questions was sent by the recruiter. It included a small coding exercise and several tricky Java questions. You should be able to complete it if you have good Java experience and some exposure to binary, octal, and threading.

After that, an interview was scheduled with three 1:1 sessions, each lasting 45 minutes.

• Round 1: I was given a scenario and asked to design a solution. This round requires a strong understanding of SOLID principles, Object-Oriented Design (OOD), and design patterns. There were also questions on transactions.
• Round 2: This focused on architecture, covering Spring, security, authentication, and authorization. Scalability and a LeetCode easy problem were also discussed, along with threading questions. I believe I was unprepared for the security and scalability questions, which likely hurt my chances.
• Round 3: This round involved a problem on linked lists. There were questions on trees, phone books, and behavioral aspects. I was also asked about UI technologies I had worked with, and transaction-related questions.

I received an email three days later stating I was not being considered for the next steps. However, I don't think I performed too badly. I knew my chances were diminished when I was unprepared for the scalability questions. Overall, the interview experience was good.

Gave a scenario and asked me to design a solution for it. OOD, SOLID, Design patterns test.

Architecture related questions on Spring, security, authentication, authorization. Scalability, a LeetCode easy problem, threading questions.

Problem on linked list. Questions on tree, phone book, behavioral questions. What UI technologies I worked on.