The interview process was explained in the first email: 1. Introductory interview 2. HackerRank test 3a. Technical interview 1 3b. Technical interview 2 4a. Adyen Formula Fit interview 4b. Board interview So I did the 1 and it went pretty well, There were 2 software engineers and the questions are mostly about yourself. After a day or so, the recruiter gave me the Hackerrank assessment. I believe time was the main problem, and you should do good time management.