Contacted by an outside recruiter asking if I want to participate in the interview process. 1st Step: Online assasment with 3 questions with 2 hours to solve on HackerRank - Algorithm question - SQL Optimization - Java Object Oriented Design 2nd Step: Technical Interview with a Principal Developer and a Team Lead, going over your answers on HackerRank and solving the questions you weren't able to solve in time (I wasn't able to solve my algorithm question in time so preapare your answer beforehand, they are cool about copy pasting from your local environment). They ask you to clearify your code and generalize your solutions with additional cases. 3rd Step: Culture Interview with two Team Leads. Most of the questions have some emphasis on Adyen Formula but they are not trying to corner you, very sweet people. Talks about mentoring, career goals, conflicts I think the main goal here to just understand your character and get to know you. 4th Step: Board Member Interview. I got the CEO as my interviewer. He was a sweet and down to earth guy, answered my questions about the history and the future goals about the company, even explained their hiring strategy.

I applied as a java developer (graduate program). There were 5-6 rounds which consumed a lot of time (If you pass one round, then you'll be moved forward). HR screen > introductory session with one senior dev (introduce yourself, why you're interested in Adyen) > Hackkerank > Code review with one tech lead and one senior > so on.. I failed at code review, they asked a lot of deep question to determine whether you really understand java.