In total, there were 5 rounds: 3 technical, plus a hiring manager (HM) and HR round.

1st round: Data Structures (DS). You need to be really good in your coding approach. The interviewer looks at the approach rather than just the final solution. Prepare well on array, string, and collection-related problems (LeetCode and GeeksforGeeks).

2nd round: Automation. Implement a backend framework for the given APIs. How to handle test data and parallel execution. Focus on code modularity and reusable functions.

3rd round: Functional. This round involved discussing previous projects and challenges you faced. Provide high-level scenarios, both functional and non-functional.

Questions related to Array, HashMap, and Strings.

LeetCode's easy and medium-level questions.