Sallek earned his doctorate degree in Sociology with specialisation in civil-military relations from the department of Sociology and Social Anthropology in the University of Stellenbosch, South Africa. Prior to this, he obtained a distinction in MSc. Criminology at the University of Northampton, England, and a Bachelor of Science degree in Sociology from the University of Jos, Nigeria. His research interest cuts across the theories and general field of civil-military relations, criminology and security studies, policing, peace and conflict management/resolution, governance, armed groups, and human rights. Sallek has been a recipient of fellowships from the Next Generation Africa Social Sciences Research Council (SSRC) New York, Lisa Maskel Doctoral Research Fellowships (Germany), and Postdoctoral Research Fellow with Stellenbosch University. Sallek is currently a lecturer in Criminology and Security Studies, University of Jos, Nigeria.