Three technical rounds.

One techno-managerial system design round.

It took almost three weeks for them to provide the final feedback. Actually, there were two technical and one managerial round, but as the interviewer was unsure, they added an additional technical round.

Reverse linked list and zig-zag level order traversal for a binary tree programs were asked in two rounds, followed by some questions on design patterns and database performance concepts.

Design a document management system that accepts requests for printing, saving, and sharing a document.