The Research Scientist III (RS III) (Epidemiology/Biostatistics) works under the general direction of the Research Scientist Supervisor I, Chief, Epidemiology and Evaluation Unit. The RS III leads the development and implementation of highly complex epidemiological data systems related to substance use and addiction. The RS III will use epidemiological research methods and/or behavioral sciences theoretical models to evaluate data sources, develop scientific indicators and tools, conduct scientific studies, conduct analyses, and write up reports, data briefs, and manuscripts for dissemination to diverse audiences. The RS III will carry out highly developed scientific work related to the evaluations of public health programs, make independent, complex decisions and be responsible for ens