I was given a hackerrank / online assessment, followed by an on-campus interview (if you aren't from a target school for recruiting, this would be a phone screen instead), I was finally flown into chicago for a full day onsite interview
Interview questions [1]
Question 1
Describe an algorithm for calculating the square root of x
Online assessment with 3 coding questions on bfs and stacks etc.
First round on a simple coding question with some basic CS questions on top of it and also asked many CV questions and motivations
Did not proceed after this round
I had an HR screen where they asked about my experience at my previous company and to prepare for C++ to talk with the hiring manager. They asked about why I got laid off at my previous company.
Application
I interviewed at Citadel (Hong Kong)
Interview
OA then phone interview, discussed about experience, coding rounds, and some open ended questions afterwards. The last 5 - 10 mins was for interviewee to ask questions back. Didn't pass this round :(