There were 5 rounds of technical interviews, with each round lasting about an hour.

Questions primarily focused on design, coding, and algorithms.

Very few questions related to specific technologies or previous projects.

Round 1 - Hands-on coding. Asked to write a meeting room booking application from scratch. UI was not needed, and few requirements or constraints were given. A laptop was provided with Eclipse, but no internet access.

Round 2 - DS/Algorithm problem related to trees (I don't recall the exact problem).

Round 3 - Design an approval workflow system (some requirements/constraints were given). Also asked to write code snippets for some cases.

Round 4 - Asked to design a document collaboration system like Google Docs. Some more design-related questions were posed, along with a few NoSQL-related questions.

Round 5 - Discussion with the hiring manager. The hiring manager also asked some design-related questions, in addition to fitment and expectation discussions.