The number of rounds is not fixed; it depends on the team. For me, there were 4 rounds. I could reach up to R3.

• R1: Telephonic interview, followed by a Zoom call, and another Telephonic round focusing on design and aptitude questions.
• R1: Most questions were on the thread and collection framework, with a couple of implementation questions.
• R2: String-based data structure questions and collection internal functionality. There was an extensive discussion on Garbage Collection (GC) and GC algorithms. Questions on transaction management and complex SQL queries (joins) were also asked.
• R3: Interview with a senior manager at Microsoft. This was the worst round as the interviewer was not interested. He started with a basic interface question and then moved on to open-ended design questions. He further went up to Queue data structures, discussing how a Deque (DQ) works and blocking queues. This person did not agree with any answer and seemed very disinterested in conducting the round.

The HR called me and stated that the feedback was not very positive. They mentioned they would reschedule my interview for another team due to multiple requirements, but later sent a rejection email.

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