Guusje interned at Lebanon Support in 2018. During her time at the organisation, she assisted in research and data collection on the Civil Society Knowledge Centre, notably the Gender Equity Network. She also contributed to the launch of the Migration Library by collecting sources. Guusje holds a degree in Interdisciplinary Social Sciences from the University of Amsterdam and the University of Cape Town. She will also be pursuing a Master's degree at the War Studies department of King's College London starting fall 2018.