First stage was 2 interviewers asking competency questions. This lasted 30 minutes.
Second stage was a presentation with q&a afterwards. There were 3 of them on their side. This lasted 1 hour.
I applied through an employee referral. The process took 2 months. I interviewed at Kantar (Frankfurt am Main) in Aug 2019
Interview
Straight forward questions were asked during the interview - nothing to difficult with some level of experience in market research. The hiring process also included the creation of a client presentation (to be prepared at home). The overall process was quite quick.
I applied online. The process took 2 weeks. I interviewed at Kantar (Londres, Inglaterra) in Oct 2019
Interview
Very easy online application, fill out details then you submit your cv.
They ask you about 16 questions in the interview, so be sure to prepare about the company etc and give examples for each question