In 2015, Klaartje chose to switch from teaching at a primary school to software development.
She is a tester and agile coach who values strong team relationships and collaboration. She has an eye for people and their interests. Over the years she built experience in different sectors including education, government and public transport.
Klaartje won the Dutch Software Testing Championship in 2017, and premiered as a speaker at the Agile Testing Days in 2019.