To be a GROW, you need to complete a couple of assessment tests which includes aptitude sort questions, a case study and a role play. The assessment center either takes place virtually for 2 days or physically in the Post Tower in Bonn for 1 day. At the end you are informed of the decision if you have been accepted or not.

Interview process was way too long, we had to do multiple online assessments, to finally get to the assessment Center. I think the process could have been more efficient. We were all given the same tasks which made the whole process quite fair.