Citadel

First, I had an online assessment. I passed and moved onto a first-round technical interview. It was 45 minutes long, and I solved two questions that were around LeetCode medium difficulty, purely technical. I then had a Superday that consisted of th

Got an OA around 2 days after sending out the application. The OA was relatively easy, and the questions were all standard LeetCode easy to medium. However, I was rejected around a week after completion.

The HackerRank questions they ask are very similar to their LeetCode tagged questions, but with some modifications. There was one number theory question. Make sure you have a basic understanding of modulo arithmetic.