I applied online. The process took 1 day. I interviewed at European Institute for Energy Research (Karlsruhe, Baden-Wurttemberg) in Mar 2014
Interview
The interview was not much different than any other interview process, you only need to be confident and prepare some answers to basic interview questions. The interviewers were very nice as well, so there is no need to be nervous or anything
Interview questions [1]
Question 1
What subject did you study at the university that is relevant to this position