The interview process was standard.

This requirement was for the Azure team.

The first round consisted of a medium-level LeetCode coding problem and some OS-related questions. I was able to solve the problem and run through test cases, but it took a few minutes to debug a particular test case. So the feedback was borderline.

The second round had some project-related questions, scenario-based questions, and one medium LeetCode problem. The feedback was good.

The third round consisted of a system design problem. Although I covered all the points, the interviewer was expecting some more details, especially around the services. The feedback was borderline.

• The second and third round feedback seemed fair. I still didn't understand why the first round feedback was borderline.

Round 1:

1. Given a boolean 2D matrix, find the number of islands.
2. Some multithreading-related questions.
3. Difference between a process and a thread.
4. How 32-bit and 64-bit processors work.
5. Inter-thread communication techniques.

Round 2:

1. Some project-related questions.
2. Some scenario-based questions.
3. Given two strings S1 and S2, return true if S2 contains a permutation of S1. If S1's permutation is a substring of S2.

Round 3:

Design an auto-scale system. Design the system at a high level, including APIs, databases, services, and components.