Many rounds, a mixture of behavioural and technicals, final round was more questions related to applications of Robinhood rather than pure LC. Also focused on the product a lot during interviews.

I applied online and received a CodeSignal General Coding assessment, which consisted of 4 standard algorithm questions (2 easy, 1 medium, 1 hard). They contacted me for a Karat interview shortly after. The Karat interview was incredibly difficult. It started with roughly 25 conceptual questions on general programming, databases, security, and networking, where you have about a minute for each question. You are allowed to pass questions that you are unsure of in order to save time. At the end, if you finish early, you can go back to the questions you skipped. The last 30 minutes were for coding. You are supposed to go through as many questions as you can during that time span.