The first step is a screening call to judge if there is enough possibility to spend the rest of the interview time.
This is followed by an initial interview, one hour. This is the first Behavioral Interview you'll encounter.
If that goes well, you are asked to do a 'loop' as well as doing a writing assignment.
The writing assignment allows you to demonstrate your ability to write concisely, tell a story, use the STAR method and demonstrate leadership principles. It's almost like another round of interview.
In my case the loop was 4 behavioral and 1 system design, though that was also about 50% behavioral too.
Following the loop, the internal team reviews, compares notes and 'votes'. If this is positive, you'll hear from the recruiter within a week.