James McClain, Ph.D., M.P.H., is the director of participant platforms for the All of Us Research Program. James serves as a program director for the Participant Center and Participant Technology Systems Center cooperative agreements, which are charged with development of all participant-facing software resources for data collection and user engagement for the program. James’ scientific interests focus on development, validation, and evaluation of hardware, software, and integrated services for mobile screening and diagnostics, remote monitoring, care management, and intervention delivery. Prior to joining All of Us, James supported an NCI portfolio focused on developing software tools to collect, integrate, and analyze diverse sensor and self-report measures for monitoring health behaviors and patient-reported outcomes in clinical and research applications. A specific focus of this portfolio was development of modular, scalable, and reusable infrastructure to accelerate development, testing, and dissemination of evidence-based interventions. James holds a B.S. and M.S. in exercise physiology from Iowa State University; a Ph.D. in physical activity, nutrition, and wellness from Arizona State University; and an M.P.H. from Johns Hopkins Bloomberg School of Public Health.