Nduka began his career in law practice in 1992, working in medium-sized law firms. Subsequently, he worked as a research fellow at the Nigerian Institute of Advanced Legal Studies before joining tax and business regulatory practice of Andersen in 1997. In 1999, he took a sabbatical to work as a resident consultant to Enugu State Government on enterprise restructuring/revitalization and general economic sector reform. He returned to KPMG (which became a successor to the Andersen practice in Nigeria) in 2003, and left in March 2005 to engage in private law and consultancy practice.
A graduate of the University of Nigeria (1990) where he won the academic prize for the best graduating student in the Faculty of Law (among other academic prizes), Nduka also holds an LL.M. degree from the London School of Economics and Political Science (1994) with focus on international business transactions, international economic law and foreign trade and investment laws of South East Asia. In addition to the training received through formal education, Nduka has also participated in structured training courses organised by Andersen on Basic Accounting, Audit Essentials, Mergers & Acquisitions and International Tax. Nduka has also attended the KPMG Manager School in Switzerland as well as the Euromoney Project Finance School in London, and a course on Public Private Partnership for development of public infrastructure organised by the International Law Institute in Washington.
Nduka is a member of the Nigerian Bar Association, the Society for Advanced Legal Studies, London, and the Chartered Institute of Arbitrators, London. He is also a Fellow of the Chartered Institute of Taxation of Nigeria, and an Honorary Fellow, Association of Fellows and Legal Scholars, Center for International Legal Studies, Austria. He has also published several articles in local and international journals on commercial and business law, especially in the areas of taxation, arbitration, corporate governance, foreign investment regulation and technology transfer. Nduka is regularly engaged as speaker at various seminars and training workshops, and also teaches law at the University of Nigeria.
Nduka currently served out a 4-year term as Attorney-General and Commissioner of Justice, Enugu State (2007 – 2011).