OA included 4 questions on CodeSignal, with the first two questions being very easy and the last two being quite tough. Didn't score the highest but received a followup "power day" interview, consisting of case study and system architecture.
I was put into a 3 round interview where the themes were technical, cultural, and an applicational phase. During each phase they would give you one or a series of questions and would want to hear your thought process and opinions.
Interview questions [1]
Question 1
A coding question related to create a person's banking account
call with recruiter and a 1 hour coding interview with an engineer. Asked basic system design and leet code easy type question. Tests how to code more than complex algo.