Applied online and first had a phone interview with 2 people on the line. They went over what they did at Northrop, then asked about my background and experience, followed up by some behavioral questions and very easy technical questions. Then I was brought in on site in Rolling Meadows for a panel interview with 5 engineers plus the hiring manager. More of the same. Just drilled into my experiences and projects I worked on, more behavioral questions and some light technical questions. Didn't have to write code or do a design or anything. Entire process from submitting my application to receiving an offer was 1 month. However my offer came the next day after my panel interview.