Very unprofessional and unreliable. They contacted former employers even though it is forbidden by law in Germany. They need to ask for consent but they didn't do. They canceled the interviews few times, after the first phone call. so lengthy and unreliable. The HR lady did not confirm anything on time nor reply emails. Besides she didn't respond to my data deletion request afterwards. Later when I searched for this company more on job search portals, I have found out that they continuously advertise same specific roles. I came to a conclusion that they spam job searchers and collect detailed data about people. Who knows what they do with that data!