The Research Assistant (RA) will work on clinical research studies funded by the National Institutes of Health. Studies primarily focus on substance use disorder and include observational cohort studies, and randomized controlled trials. The primary responsibility of the Research Assistant is to screen, recruit, enroll and interview research participants for the purpose of collecting study data. The Research Assistant will also track participants over time and conduct follow-up interviews and data collection. Additionally, the Research Assistant will assist with the development of protocols, forms and assessments, perform data entry and quality control procedures for the ongoing research, and provide administrative support to the study (i.e. scheduling meetings, preparing and circulating meeting agendas and meeting minutes for regular study team meetings, filing study-related documents, etc.).