Recruiter screen, 2 coding rounds, 1 system design round. System design is going to be around the finance industry. So knowledge of financial instruments, etc. is helpful. Recruiter is helpful throughout the process, and will provide material that you should review before each interview
Questions d'entretien [1]
Question 1
Design financial instrument trading system. How will you ensure atomicity, consistency, etc.
J'ai passé un entretien chez Citadel (Londres, Angleterre)
Entretien
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
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 :(
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.