3 phone call rounds.

Not much difficult. Mostly C basic questions, a puzzle, and a practical question.

The coding round was a little tough.

Overall, a smooth experience. The whole process was over within a week.

Mid-level interview difficulty.

1st round: Practical questions like the computer boot process, what happens when a USB is plugged in. Job location and preference-based questions. Initial screening round.

2nd round: Basic C and Java questions like data types, access modifiers, OOPs concepts. Questions about when to use which language with examples and why. One probability-based puzzle: https://www.geeksforgeeks.org/puzzle-50-red-marbles-and-50-blue-marbles/.

3rd round: Operating system-related questions like the difference between a thread and a process. Paging algorithms. Basic Linux commands. What is a PCB?

4th round: Face-to-face paper coding round:

• Two linked lists are intersecting at multiple nodes, like a chain. Print intersecting node values. You can use any type of linked list with any kind of structure. No constraints, with any number of pointers in the struct.
• Array with random 1s and 0s. Separate 0s and 1s on the left and right side of the array without using other data structures.

100% solutions to any coding questions were expected; just the thought process and coding fluency were important.

5th round: HR call for salary negotiation.