I was interviewed by two senior scientists for around half an hour. I was asked to briefly introduce my research and they asked questions about details. There was no other technical question. After that, they asked several behavior questions such as the career path etc. The last 10 minutes they talked about the available position and answered my questions.

The interview was a recruiting event that consists of 10 universities around the US. There was an on-campus interview that consists of two interviewers. Then they flew you to Dallas (HQ) to interview with HR and hiring managers. The HR portion was good, but the hiring managers are very technical, so come studied up.