I was interviewed for 3 different positions so there were 3 Eng. Managers and a potential co-worker on the conference-style phone call. Most of my questions were relevant to the academic projects stated in my CV on which they asked a lot of technical details. There were some behavioural questions as well like how did I dealt with problematic team members or had I ever worked within a team with foreigners. I think that as long as you're honest and know your technical stuff, you'll be OK.