Joseph studied Theology at the University of Exeter, before moving on to MPhil study in Theology (World Christianities) and then a PhD in Theology, both at the University of Cambridge. He has also been a Lecturer at Birmingham Newman University and a Research Fellow at the University of Birmingham.
His current role is as a British Academy Postdoctoral Fellow at the Faculty of Divinity at Cambridge. He has taught on papers ranging from 'Understanding Contemporary Religion' to 'Themes in World Christianities'. Joseph also convened a module on the interaction between the historic interaction between Christianity and food at St Albans Cathedral. For his innovative and student-led approach to teaching Joseph has been appointed Fellow of the Higher Education Academy.
Joseph is a co-convenor of the Indigenous Studies Discussion Group at Cambridge where he has organised a diverse range of panel events and an international research conference. He is also Editor of the Methodist theology and praxis journal Holiness based at Wesley House, Cambridge, and a former editor of the Faculty of Divinity student research journal Noesis.