The Center for Biostatistics in AIDS Research (CBAR) at the Harvard T.H. Chan School of Public Health is seeking a Master's level Biostatistician or Epidemiologist to join the Health Outcomes in Pregnancy and Exposure to HIV/ARVs study (HOPE). This position is ideal for a new graduate with a Master's degree in biostatistics, epidemiology, or a related field, who has a keen interest in analyzing data from observational studies. The HOPE study aims to enroll and follow approximately 1630 young women living with HIV across various US clinical sites, including Puerto Rico. This research leverages the Pediatric HIV/AIDS Cohort Study (PHACS) network to explore the multilevel determinants influencing the health of women living with HIV. The PHACS network, established in 2005, focuses on critical pediatric HIV research questions, including the long-term safety of fetal and infant exposure to antiretroviral therapy and the health impacts of perinatally acquired HIV infection and ART treatment on adolescents and young adults. In this role, the successful candidate will collaborate with a multidisciplinary team of medical researchers, senior statisticians, epidemiologists, social scientists, and community advisory board members on new research initiatives within HOPE. Responsibilities will include providing input on study design, drafting analysis plans, statistical programming, data analysis, report writing, and co-authoring peer-reviewed manuscripts under the mentorship of senior staff. The position will also involve participation in internal CBAR committees, contributing to the collaborative research environment. The position is located within the Center for Biostatistics in AIDS Research (CBAR), which has a long-standing commitment to the growth and development of its research staff, offering a defined career path and opportunities for continuing education and attendance at professional meetings. This is a term appointment through February 28, 2026, with the possibility of renewal based on funding availability and performance.