HR called me through some portal (didn't mention). Scheduled a VC Screening test, rest followed in order

Experience: 4+ years
Tier-I Institute

Zoom based Screening:
Interviewer was young and cool. Asked to brief about my profile and then a Coding problem, had to write code in coderpad sort sharing IDE.
Prob: Tweaked https://leetcode.com/problems/house-robber/ with binary tree instead of an array
Explained approach and did code it successfully, he asked few Java questions (Immutability, Inheritance, Java 8 features)

HR called after a couple of days to schedule Virtual Onsite:

• Round1:
  HLD&LLD discussion for Online Reservation System like Redbus
• Round2:

1. Find unique element in a array containing all duplicates
2. Find maximum path from Root to leaf in a BT
3. Couple of Java Questions and LP

• Round3:
  Java questions (String class related, Threads, Collections, OOPS, compareTo equals and hashcode correlation) and two simple programming questions. Few Cloud Computing topics were touched too
• Round4:
  This was the chillest of all, more of a discussion on my profile and previous projects. Really liked the way interviewer driven this