Sassy is an Associate Professor in Oxford University, based at the KEMRI-Wellcome Trust Research Programme in Kilifi, Kenya, since 1994. She has a PhD in behavioral studies, and is currently the chair of the Social Science and Ethics in Public Health theme in Kilifi. Sassy's research work has focused on two main areas: the interface between health systems and households (including exploring household treatment seeking behavior, gender relations and affordability of health care); and the interface between health researchers and communities (including informed consent, community engagement, payments and benefits for research participants and communities, and social science ethics). Her current main focus is her Wellcome Trust fellowship on community accountability; producing new thinking, evidence and recommendations around strengthening community involvement in biomedical research and health delivery in sub-Saharan Africa. This takes forwards her prior work and includes significant capacity strengthening elements. Future research will focus on health system and research governance, including internal accountability mechanisms; exploring formal policies and processes and how these are implemented and transformed in practice by actors operating at various levels of the health system for a range of health and research institutions and interventions. Sassy is an active member of programme committees that review new research proposals, and supports strategic planning around ethical issues that emerge during research across the programme. She contributes to social science and research ethics training at the Centre for early-to-mid career scientists, front-line staff and community representatives.