Qualcomm System Engineer interview questions

I interviewed with five engineers in the order of position level ( from engineer to senior staff engineer). They mostly asked technical questions in the applied area. They are not so difficult (mostly basic signal processing questions). They also asked me to talk a lot about past experiences. Overall they were friendly. However, as we go with people at higher position, they tend to be quite blunt (which is opposite to what I expected). After finishing all interview sessions, I did not feel like I work with them. The work environment and benefits (mentioned by the recruiting staff) were awesome.

Simple questions, but everything outside the resume, gotta be patient and nice experience for interview