I applied online. The process took two months.

The preliminary test includes eight quiz problems with about a four-hour time limit, which aim to assess the generic problem-solving aptitude of the candidate. Although the company considers this kind of test very meaningful for the hiring process, I cannot understand how these tests can be used as unique criteria to discriminate between research candidates. Maybe the hiring process could be improved by looking more in-depth into research publications and technical skills of the candidate, instead of focusing too much on logic quizzes that are not well-defined.

Quiz tests assess the general problem-solving aptitude.