Behavioral based interview with knowledgeable and friendly interviewers. Handful of questions that had general focus areas on previous experiences and applicability to RTX. About 45 minutes, including questions at end.
I applied online. The process took 4 weeks. I interviewed at RTX (New York, NY) in Jan 2020
Interview
They reached out to me to schedule a phone interview with a SWE manager. One phone interview before I received my offer. Very easy interview and interviewer was very nice.