I applied online. The process took 2 days. I interviewed at Emma (Frankfurt am Main) in May 2015
Interview
Kurzes aber nettes Gespräch, wurde selbst von einem Praktikanten befragt. War angenehm und habe mich stets wohl gefühlt. Getränke wurden Angeboten. Nach nur einem Tag habeich per email eine Zusage erhalten. Teilzeit Praktika sind auch möglich.
Long interview with a lot of technical questions. First come with HR interview, then move forward to manager interview. Each takes more than an hour. For an internship, its pretty lenghthy concerning the salary is low.
Online Video interview: I was given a link for the interview and the entire process was simple and not so lengthy. Keep in mind though that you can't go back if you mistakenly skip a question and then you'll receive an incomplete interview email the next day.