General Dynamics Electric Boat Senior Engineer interview questions

I did 3 interviews. 2 for senior engineering positions and 1 for an engineering supervisor position. The 2 P3 jobs were both phone interviews. The interviewers were all hiring managers and very personable. They asked a mix of background, behavioral, technical and personality questions. They were both very low stress (relative to other interviews) and less formal. Both hiring managers reached out afterwards to thank me for interviewing and offering their help if I needed it. I was offered both jobs but didn’t take them. The supervisor position interview was in person. It was more formal with 4 interviewers and I was told the format of the interview at the beginning (10 questions, mix of behavioral and technical). It was still less formal, but more pressure due to being in person. All interviewers were nice. I was not offered the supervisor position but the hiring manager reached out to me, thanked me for interviewing and then offered me a position on the team. He fought for a higher pay rate on my initial offer. I took this job