Ainslie is a Research Associate working with the Infection Analytics Program at the Kirby Institute.

After graduating in Biotechnology from the University of Wollongong, she worked at the Faculty of Medicine and Health, UNSW, and the Garvan Institute of Medical Research.

Her research focus with the Infection Analytics Program is on conducting systematic reviews to support analyses of the effectiveness of vaccination against common respiratory infections. Her reviews have fed into studies that use antibody levels as a correlate for predicting vaccine efficacy.