Karlijn studied at Erasmus University Rotterdam. In addition to the Bachelor’s degree in Law and the Master’s degree in Employment Law, she has obtained her Bachelor’s degree in Economics & Business Economics. Since September 2014, Karlijn has been working as a legal assistant at Sørensen Advocaten and then as a lawyer. In 2019 Karlijn obtained the Postgraduate Course of Labour Law cum laude. She is a member of the Association of Employment Lawyers netherlands (VAAN), the Association of Rotterdam Employment Lawyers (VRAA) and the Association of Young Employment Lawyers (VJAA).