Prior to joining NIE, Marcus was a lecturer at Queen's University Belfast where he taught various courses on Asian Theatre, Virtual Performativities and Intercultural Theatre. Marcus also formerly taught at Dunman High School and Temasek Junior College where he was Deputy Head of the English Department, and was responsible for designing and instituting the Language Arts curriculum for TJC’s integrated programme.
A Public Service Commission scholar, Marcus completed his BA(Hons) at the National University of Singapore; this was followed by an accelerated Master of Arts degree that was funded by a research scholarship awarded by the National University of Singapore. After completing his teaching bond, Marcus pursued his doctoral degree at Trinity College Dublin with the assistance of a research studentship awarded by the university.
Marcus's research specialisation include intercultural theatre, multiculturalism and social performativity, and sound studies and acoustemology as they relate to theatre and performance. He has also researched in the areas of postcolonialism and postcolonial theatre, digital performance, performativity in virtual environments, as well as critical theory and performance philosophy. In these areas, Marcus has published several book chapters and articles in leading journals including the Performance Research, Contemporary Theatre Review, Theatre Research International and The Drama Review. One of these articles was awarded the top prize for the Theatre and Performance Research Association Postgraduate essay competition in 2010; another came in second in Trinity College Dublin’s Journal of Postgraduate Research essay competition; a third was selected to be among the top twenty international submissions in the International Federation for Theatre Research’s New Scholars Prize (2009). His monograph, Acoustic Interculturalism: Listening to Performance, was published by Palgrave Macmillan (2012) as part of the award-winning series, 'Studies in International Performance'. Marcus is also co-editor of the book Performing Southeast Asia: Performance, Politics and the Contemporary (Palgrave Macmillan, 2020).
Marcus is the Associate Editor of the Journal of Interdisciplinary Voice Studies and online content editor of Theatre Research International and serves on the Advisory Board of ‘Methuen Drama Agitations’, a book series by Bloomsbury Methuen Drama. In addition to being a member of the Asian Shakespeare Association, Marcus is an active member of the International Federation for Theatre Research where he is also the convenor of the Music Theatre Working Group and part of the Executive Committee as Secretary-General for Communication. Marcus is also the academic consultant for ‘SoundscapeSG’, an online sound archive created by the National Archives of Singapore.