Went through 5 rounds, dsa, dsa+lld, dsa+hld, techno-manegerial with Director/Head who was mostly interested in flows, basically how you debug/deploy/work. Final was an HR round which was more of a standard discussion. DSA - easy to medium, mostly strings. LLD - Started with solid principles and day to day use. Then how would you design async processes, multithreaded systems, atomic/volatile keywords, usecases, drawbacks, etc. producer consumer problem and it's soultions. Queues, backpressure, blocking queues, etc. HLD - semaphores, scheduling system design problem. Cleared all rounds but no offer extended due to position being filled.

I went till 3rd round . 2 technical, 1 managerial. First round was like coding test. Ask to write linked list related programs and then jumped into sorting algorithm. Second round was technical discussion on project which I worked.