I applied online. The process took 3 months. I interviewed at Lawrence Livermore National Laboratory (San Francisco, CA) in Feb 2020
Interview
First a 15-20 phone screening. Then they will ask you to make a presentation of a problem/project. Can be anywhere from 30minutes to a hour. Some interviews will have a case study on the spot for you to solve.
Interview questions [1]
Question 1
How will you adapt, how do you problem solve, how do you work with a team, are you team oriented? and of course some diversity questions because the organization is very "woke".