This paper discusses the nature of the professional expertise needed in residential child care (RCC) in light of recent debate on social pedagogy. Focusing on the question of what kind of expertise is introduced in this debate, the paper deals with the contribution of social pedagogy to the professional development and professional competences of the RCC field, as well as the characteristics of professional knowhow in particular. The paper discusses also the research on how RCC expertise is constructed among RCC workers and how they demonstrate their expertise to other professional groups. The final aim is to outline a social pedagogy-informed profile of professional RCC competences. The purpose is to stimulate and enable multidisciplinary reflections about different kinds of expertise and shared responsibilities, towards developing an integrated framework for RCCs. Moreover, the paper emphasises the relevance of social pedagogy as a subject for training to promote RCC professionalism.