I applied online. The process took 2 weeks. I interviewed at Northrop Grumman (Chicago, IL) in Nov 2016
Interview
Initial phone screen went over a brief explanation about what they did and then asked me some basic questions about myself and my experience.
The on-site interview was a panel interview with about 5 people. This, also, started with more detail about what they did. Then they asked me some technical questions.
They contacted me for an in person interview and then asked me leet code style questions. After the interview I heard back from a recruiter who set up another phone call with me
I interviewed at Northrop Grumman (Huntsville Park, AL)
Interview
Technical questions and behavioral questions (STAR formatting) with the normal what draws you to work for us. Microsoft Teams meeting with a panel to review answers. Took roughly 1 hour and it was a very straightforward and easily made process.
Formal, not too stressful. Ensures you understand the basics and thay you know what you're talking about as you may be getting interviewed by somebody that's technical at some point.