I applied online. The process took 2 months. I interviewed at Q Corporation (Fillmore, CA) in Mar 2017
Interview
It is both written and verbal. You have to be physically present. I guess they assess you from your writing to your composure when answering questions verbally. Your competence level is also important. Those guys are clearly high tech.
Interview questions [2]
Question 1
Fill out in your handwriting information about yourself, education, places worked and mature of work done
I was taken to the workshop and shown the nature of the operations. Afterwards I was asked to share my electrical experience and state how I can apply it to their operations