I applied in-person. The process took 6 months. I interviewed at Northrop Grumman (Baltimore, MD) in Nov 2015
Interview
I had been working as a contractor. So there was no formal interview process. People I worked with knew me well. I left a good impression with them because I learned a technology entirely new to me and became productive in it within a fairly short period of time.
Interview questions [1]
Question 1
They wanted to know if I was productive and self-motivated.