I applied online. I interviewed at Mathematica in Dec 2020
Interview
The process consisted of three separate interviews.
1. A brief introductory interview.
2. A more in-depth interview with two people very familiar with the role.
3. A multi-hour final interview in separate sessions with other individuals connected to the role.
Interview questions [1]
Question 1
I was most primarily asked about my experience as a designer and programmer.