I received a call from HR the same day an employee referred me because there was a shortage of time.

The interview was comparatively easy.

It depends on which team/product you are being interviewed for.

There was:

• 1 telephonic screening
• 3 rounds of technical interviews
• 1 telephonic HR interview

The 3 technical rounds were split into:

1. Coding on paper.
2. Networking, DSA, OS basic questions.
3. Discussion of previous company projects with the manager.

GeeksforGeeks is the one and only site required for interview preparation (as I write this review). I do not think any question would be asked outside G4G. For interview reviews, you need to ask those who attended interviews in the very same team. No tricky questions; just DSA.