I applied through a referral and had an initial call with a recruiter. After this, I had a zoom video call for 30 mins with the hiring manager. Next, I was given the assignment that is mentioned here on glassdoor. I thought the assignment was fair and straightforward for the role. They also provided an example of what to do which made it clear what they expected. In the next round, you present your assignment to multiple people and they will ask you questions about your thought process. Next was on-site interviews with 6 people, plus 2 for an informal "coffee chat". This took a half day. After that, they moved to the offer. My experience was wonderful with the team and the recruiters. They made me feel valued and like they wanted me as much as I wanted them which led me to choose them over another large tech competitor. I disagree with previous comments that they want you to do the assignment so they can get ideas from you. They want to get an indication of how you work and the value you can bring to the team.