Vejune uses data analysis and visualisation techniques, including network analysis, to study global screen industries. She researches film production, theatrical film distribution, film festival circuit, public service television, and historical newsreels. Vejune is particularly interested in diversity, including cultural and thematic content diversity, as well as gender diversity in media production and distribution. Her work is interdisciplinary, data-driven, and industry-facing, often performed with large research teams and in collaboration with industry partners.