The interview process took three rounds over three weeks.

• First round: Technical discussion, theoretical only.
• Second round: Problem solving and theory.
• Third round: Design and problem solving, with a deep dive into projects.

Problem Solving:

1. Find if the given tree A is a subtree of the given tree B.

2. Provide pseudocode to convert a string to a number without using library functions or Integer.parseInt(). Example string: "1234.56"

3. Explain the internal working of a HashMap.

4. Explain the internal working of Elasticsearch.