Dr Fitzgibbon is the Deputy Director of Research at the Monarch Institute within the Monarch Mental Health Group, and an adjunct Associate Professor within the Department of Psychiatry, Monash University. Her research program is dedicated to understanding the relationship between neurobiology, chronic pain and mental health, and how this may be harnessed to advance prevention and intervention strategies.

She has received several awards for her research including being invited to give the 2021 Tess Cramond Lecture at the Australasian Pain Society Meeting, the 2018 Australasian Brain Stimulation Society Early Career Award, the national 2014 Bethlehem Griffiths Research Foundation Young Investigator of the Year award, a 2014 Young Tall Poppy Science Award through the Australian Institute of Policy and Science and in 2018 was selected for the Veski inspiring women STEM sidebyside program.

She is also passionate about the advancement of brain sciences within Australia, as reflected in role as chair of the Australian Brain Alliance EMCR Network (2017-2021) and an Executive Member of the Australian Brain Alliance (2017-2021), an initiative of the Australian Academy of Science to bring together strategic brain research across Australia. She holds several other professional roles including being an executive member of the Australasian Brain Stimulation Society.