The OA (Online Assessment) has 4 questions: 1 easy, 2 medium, and 1 hard. The time period is around an hour and a half. Answering more than 3.25 questions is usually enough to progress.

If you pass the OA, you are invited to the Power Day, which consists of 3 interviews, each lasting one hour, with an hour break in between.

The Technical interview featured:

• An OOP/Class Design question (LeetCode Easy).
• A LeetCode Medium/Hard question related to Linked Lists.

The Behavioral interview was a standard format with 3 "tell me about a time when..." questions. Be prepared to answer a ton of follow-up questions.

The Case Interview was not necessarily difficult but unique, involving a specific problem experienced at Capital One. It required a lot of data analysis and the development of an efficient approach to implement that analysis in code.

I would say that the most important thing is to always keep communicating with your interviewer, even if you have difficulty with a certain part.

OA and Power Day, as explained above.