I applied online. The process took 3 months. I interviewed at Mathematica (Washington, DC) in Mar 2018
Interview
There was an initial screening interview over the phone. I got a call back a couple weeks later. Next I had a series of interviews in their DC office over the course of about half a day. The questions were mostly not technical, and instead focused on more general questions.
Interview questions [1]
Question 1
How do you deal with balancing multiple assignments and obligations at school?
I applied online. The process took 4 weeks. I interviewed at Mathematica (Chicago, IL) in Mar 2018
Interview
It was a pretty standard interview where I spoke to multiple employees, some in person and some via video chat. There were no group interviews. I was asked to speak about my previous research experience.