Adyen Senior Software Engineer interview questions

first step is a call with HR to align on experience and expectations, then an online coding assessment on Hackerrank of which I believe you need to answer everything perfectly to go to the next step

Madrid: good technical process, but POOR communication and lack of closure after final interview Pros: * The recruitment process is technically good and well-structured in its early stages. * The initial assessment consisted of a HackerRank technical evaluation with a programming exercise focused on performance, object-oriented design, and three SQL questions, which felt relevant and fair. * This was followed by a technical interview discussing the assessment results and deeper system/design topics. * I also had a hiring manager interview and a technical leadership interview, both of which were professional and engaging. * Throughout most of the process, the recruiter was very responsive, usually replying within 48 hours. Cons: * After completing the final interview, communication abruptly stopped; * I attempted multiple follow-ups via email and phone without receiving any response. * Only after reaching out to one of the technical leaders I had interviewed with did the recruiter reply, stating she would call — but that call never happened, and communication stopped again. * The lack of closure after reaching the final stage felt unprofessional and inconsistent with Adyen’s publicly stated values around transparency, ownership, and respect.