I applied online. The process took 2 weeks. I interviewed at Citadel (London, England)
Interview
I was invited to a Hacker Rank technical test which contained 2 questions to be completed in 66 minutes. These were much harder than other questions I have seen from other employers for this level of role (internship for undergrads).
Interview questions [1]
Question 1
Given the starting position of a knight on an nxn chess board (n was in the input), find the minimum number of moves required to reach the target square.
First did OA and only passed 1/2 questions, where the first one was probably a leetcode medium and the second one was an easy. Then got first round interview, which I havent done yet.
Interview questions [1]
Question 1
1st OA questions was I think a search problem and 2nd OA question was a dp problem.
First round 45 mins total with short behavior and technical. I had one question, which was a class design question using heap. Solved question in time but did not hear back.
OA, one technical round, technical superday (3 interviews), leadership call rounds (mix of technical and behavioral qs, typically 2 ro more calls). did not pass the leadership round, very high variance.
Interview questions [1]
Question 1
lots of OS, computer archictecture, c++, language internal topics