Currently, Stevens is a Research Associate in Neurology at Boston's Children's Hospital, Associate Professor of Neurology at Harvard Medical School, and institute member of the Broad Institute of MIT and Harvard.[8][2] She is the Principal Investigator of the Stevens Lab, which "seeks to understand how neuron-glia communication facilitates the formation, elimination and plasticity of synapses—the points of communication between neurons—during both healthy development and disease."[9] Stevens's work has led her to the discovery of different roles of microglia and their relevance in neurological diseases.