Wiesje van der Flier is executive director at Alzheimer Nederland as of November 2025. Van der Flier holds a research affiliation with Amsterdam UMC, department of Epidemiology and Data Science. From 2004 to 2025, van der Flier worked at Alzheimer center Amsterdam at Amsterdam UMC, since 2021 as scientific director. Van der Flier was Principal Investigator of the Amsterdam Dementia Cohort. She leads ABOARD (A Personalized Medicine Approach for Alzheimer’s Disease), a Dutch public-private partnership of >30 partners. In 2015 she has written together with colleague Philip Scheltens a book, het Alzheimermysterie, which was published by the Arbeiderspers.