Ari obtained her PhD in Cellular and Molecular Biology from the University of Pennsylvania, where her research focused on the immunology of host-pathogen interactions, specifically how B and T cell responses against parasites are established and regulated. In her postdoctoral fellowship at the National Institutes of Health, she continued working to understand host-pathogen interactions, researching the establishment and maintenance of T cell responses at tissue sites in response to infection. She joined Regeneron following her postdoctoral fellowship, where her work has focused on developing therapeutics for autoimmune disease.