I applied online. The process took 6 weeks. I interviewed at Atrain (Bamberg) in May 2013
Interview
You will have to send in your documents directly to atrain there is no online application form. If they are interested they will call you/write you a mail and invite you to a skype interview. After the skype interview they will tell you within one month if you got the internship or not.
Interview questions [1]
Question 1
What was a challenging situation you had in your previous job/internship/university and how did you react?