Céline has been working at the Royal Library of Belgium (KBR) from 2011 on. She has been the Head of the Contemporary Books collection and General Reading Room since 2014 and has been involved with the unification of the reading rooms, which started in 2020. As a result of this unification, a project was launched around the renovation of the reading room in 2021 under her supervision. She is also involved in other renovation projects and plans at the library.