Ngenge’s work focused on courts, constitutions and democratization. He is led the development of a database of selected constitutional case law with a view to increasing understanding of how judicial response on a specific range of constitutional issues impacts democracy. Previous to this, Ngenge managed the conceptualization and development of International IDEA’s ConstitutionNet website project, which is a key online platform for showcasing the Institute’s work in the area of constitution-building and an information hub for global news and analysis on trends in constitution building processes around the world.  

He has authored and edited several pieces on constitutional transitions, including on courts in Africa, which have been featured in various publishing outlets including Foreign Policy, Devex and Open Democracy.