Round 1 (DSA):
3 questions : valid parenthesis, arrange odd and even numbers in an array (odd to right, even to left) in O(n) time, and one more question on string manipulation (which I don't remember)

Round 2:
1 DSA (find first negative number in every k pair in an array) + 1 LLD (Meeting scheduler)

Round 3 (HLD):
Design event notification system (discussions around usescases in Paypal)

Round 4 (Round with Senior Product Manager):
Mostly onto scenario based questions: understanding the customer, navigating through ambiguous business requirements, work management etc.

Round 5: (Hiring Manager Round)
This was a behavioral cum cultural fit round.

(Now waiting for about a week for results, and next round is HR round)