First-round was coding round. There were 1 demo question and 5 real coding questions. They provided only c++ and java as programming languages for coding and you were not allowed to use inbuilt libraries like <algorithm>. Second-round was 3-4 hours system design round. We had to design and implement a program for backup and restore. Your program should take a list of filenames and list of their content for backup at a timestamp and then these files including old files should be back up. When the user wants to restore a particular file from a particular timestamp, your program should return the content of the desired file at the desired timestamp. Technical round. They asked me about my projects HR round : Usual questions