I applied online. The process took 6 weeks. I interviewed at Berkeley Existential Risk Initiative
Interview
I was given a take home assignment to complete over 24 hours. The assignment was to implement an algorithm given pseudocode. I then had a short video interview, followed by a second 4 hour working interview.
Interview questions [1]
Question 1
Some behavioral questions such as difficult coworkers, work style, how to structure a software library so that it can be extended.