The purpose of this article is to reflect on the methodological specifics of a biographical narrative study conducted with a group of health professionals who work in a pediatric resuscitation and continuous care department of a reference hospital for the care of children, located in the city of Paris / France. This study took place during the years 2018 and 2019 and aimed to understand the construction of the biographical journey of these health professionals, as well as the learning acquired through their lived experiences. Developed using an anthropological grounding approach, the study brought the biographical research approach and ethnography into dialogue. In this article, the methodological choices, the manner of conducting the narrative inquiry in the field, and the process of interpretation and analysis were highlighted in order to weave links between the research and the fields of health and education, which also allowed for reflection on the contributions of narrative inquiry, the social relevance of the biographical approach, and its interdisciplinary nature.