International aid architecture has created a space for development experts to operationalise development policies in various capacity. A growing body of literature highlights the agency of this group through an ethnographic lens for deepening the understanding of development practice. However, this article reveals that there is a gap in the existing literature as the roles of national development experts (NDEs) remain rather unexplored in development. This article aims to bridge this gap by introducing the NDEs as an unexplored actor in development and setting an agenda for further research. Drawing on a Bangladesh case this article argues that not only will the accounts of NDEs deepen the existing scholarship but also without their reflections we will only have partial development ethnographies.