I applied through an employee referral. I interviewed at Arizona State University
Interview
Call from professor asking about my experience in the field and how confident I am to answer students questions and help them in labs. Not too hard, good course and good professor, and good university.
Interviewed as a TA. It was a quick meeting with a professor. I had to demonstrate my skill related to the field and I had to demonstrate my teaching skill.
It is easier to get through if you make an acquaintance with the professor teaching a particular course of interest. The professor can recommend you to the hiring department and make the process much more simple. I did not have an HR interview as a result but just interaction with the professor