I applied online to Zalando for the position of Backend Java Engineer. I received a codility exercise by email. I was however, surprised and turned off. I received 3 questions, 1 in Java, and the other 2 in C and JavaScript. While I knew these languages, in the confines of a timed challenge, it would not be the best time to brush up on particular nuances of the language. I was most certainly disappointed by the process as nowhere in the job description mentioned anything about JavaScript, let alone C. While knowledge of multiple languages is a given, it is highly lackadaisical to request someone take a test in a language not requested by the job - and worse yet, that you cannot confirm he/she knows. I indicated this to the recruiter for the position and got no reply.
Do better Zalando.