Interdisciplinarity has become one of the catchwords in current higher education and science policies, with the underlying rationale being that scientific breakthroughs and solutions to today's global challenges require collaboration across scientific fields. However, several empirical studies have shown that interdisciplinary promises are not necessarily realised in research practices, due to manifold cognitive, epistemic, cultural and organisational barriers. Drawing on interviews with women academics working in health technology in Finland, this paper traces subtle obstacles, hidden power relations and invisible hierarchies in interdisciplinary research work. A special emphasis is placed on understanding intersections of gender and interdisciplinarity, pointing to gendered implications of the current policy rhetoric of interdisciplinarity.