Very transparent, several interviews and an IQ test. Interviews spread over 2days. Interviews split in 2 parts: questions about yourself (weakness, success, team player, specific CV items - basic story telling) and case studies. More colorful and interesting than standard cases and other competitors. One interviewer liked giving strict deadlines for answers ("you have 30 sec to give me your recommendations" etc.)

I was contact by a recruiter to apply for this position. The interview included a computer test with quantitative questions and language assessment (this was for a bilingual speaking role).