After I applied for the Research Technologist position with JHU, I was contacted a week or two later by the Director of the laboratory by email in which a phone interview was setup.The actual phone interview didn't feel like an interview at all. The Director gave more detail about what the position was and what it entailed and asked if I was still interested. When I said I was, a formal interview was scheduled. The formal interview was fairly easygoing as it was an an entry-level position I had applied for, and the Director was very kind. Emphasis was on experience with questions like: it says here on your resume that you were involved in this project. Can you tell me more about your role and what you did? In addition, they were also interested in the coursework that I had taken that was relevant to the job. I met with several members of the laboratory and got to ask questions in which they were helpful. The interview was also more listening than talking. They want to inform you of their research goals to see if it's worth pursuing for you. I'd suggest becoming familiar with their research by reading journal articles so you can not only keep up with them, but you can ask relevant and "smart" questions.
Therefore, if you know your resume inside out, you will ace this interview. The position was offered to me by email the same day as the interview. However, I still sent thank you notes by email or LinkedIn with everyone I interviewed with.
The hiring process was far less easy. Many, many, many forms are required for hire, and I cannot tell you how many times I filled out the same form more than twice. Be prepared to do background checks and drug tests and the like. The entire process took a little over a month.