He worked as a journalist (and received the Nigeria Media Merit Award for Journalist of the Year) before moving to Syracuse University, New York for a Ph.D in English and Textual Studies. His research areas include African, African Diaspora, postcolonial, and world literatures; semiotics and critical theory. Nwosu is a fellow of the Akademie Schloss Solitude, Stuttgart, Germany and the Civitella Ranieri Center in Umbertide, Italy, as well as a member of the Phi Beta Delta Honor Society for International Scholars. Nwosu's published works include fiction (Invisible Chapters, Alpha Song, and Return to Algadez), poetry (Suns of Kush), a coedited anthology (The Critical Imagination in African Literature: Essays in Honor of Michael J. C. Echeruo), and critical studies (Markets of Memories: Between the Postcolonial and the Transnational and the recently published The Comic Imagination in Modern African Literature: A Poetics of Laughter).