The proccess began by linkedin. The recruiter ask me about new opportunities and we schedule a skype call, just to him hear about me and check if I really fit with position. Two weeks after I did other skype call with a new recruiter that describe me more details about, zalando, benefits we spent about 40 minutes talking and she sent me a link to codility On codility I did 3 exercises, the exercises was simple but you need to take care about details and Big O notation Then I did 3 tech interviews, 45minutes each one with 15 minutes interval. The interviews difficulty was increasing by each one. The first one was so simple, with a live coding, just java. The second one was harder and I have to describe some data structures and the live coding I have to write the same exercises using java 7 and 8, clearly the interviewer wants to know if I really know the new java 8 apis. The last one was really hard, I have to create some component diagrams and explain my solution about a social network like twitter, the interviewer did great questions fortunately I did well