Gisela was trained as a biomedical researcher and has researched HIV/AIDS (PhD, AMC Amsterdam) and antibiotic resistance (post-doc, Hubrecht Institute). From 2015-2020 she is a policy adviser for the Bachelor programme Biomedical Sciences. In her role she was responsible for a number of portfolios, including Internationalisation, Selection and admissions, the programme's Strategic Plan, the Education and Examination Regulations and she contributed actively to the taskforce Diversity and Inclusion of UMC Utrecht. Since April 2020 she is Assistant Professor Education Innovation for the master's programme Biomedical Sciences, where she develops education on Diversity and Inclusion in research. She also researches the interventions.
Her contributions to the Platform D&I UMC Utrecht continue. She represented the Faculty of Medicine at the meetings for the Faculty Coordinators Diversity of UU, but these meetings have ceased since the start of the Steering Committee EDI. She was a member of the advisory board for the USO project Diversity in Admissions and Selection UU and is a member of the advisory board for Open Education UU. Starting in September 2022 she is a member of the Core Team Diversity and Inclusion at UMC Utrecht and as of September 2023 she is a member of the Equality, Diversity and Inclusion Steering Committee at UU, representing the Faculty of Medical Sciences.