You start with a telephone interview, which is just a way for them to screen whether you are a good fit. If you pass, they will bring you in for an in-person interview. However, they also look at how you do on their examination. I assume they are looking for people who work well under pressure but also can multitask and manage issues that aren't your area of expertise.
The process is very intense. Three or more hours of explanation, exams, and a presentation I had to create. The exams were both logic games and a personality test. I was preparing for weeks.
Interview questions [1]
Question 1
Explain a process that you find interesting. This can be any process - manufacturing, distribution of products, or a method to create something.
Not invested in who they're hiring if they rely heavily on multiple assessments for applicants to take (personality quiz, etc). These are unpaid and take hours. A poor use of time.
Intro zoom call, and several hours of tests on a lockdown browser before even getting to have the first ten minute phone interview. Phone interview was basically combing through my resume and any gaps.