Prof. Jerzy Cieślik graduated in 1971 from the Warsaw School of Economics (M.A. in Economics and International Business) and joined the academic staff of the School in the same year. In 1976 he obtained a PhD degree in economics (international economic relations) and habilitated in 1988.

His academic research and teaching concentrated on the international transfer of technology and the operations of transnational corporations, with particular interest in their role in the East-West economic relations. He is an author/co-author of 4 books and over 60 articles, published both in Polish and in international journals. In the years 1983-1989 Prof. Cieslik was involved in a number of consultancy and advisory projects, working both for companies in Poland as well as in a number of countries of Africa and Asia as an expert for international organizations within UN system (UNIDO, UN Centre on Transnational Corporations and World Tourism Organization). He assisted the government institutions in developing countries in making more efficient the process of technology transfer, strengthening their negotiating position vis-a-vis foreign investors and implementing specialized information systems, supporting decision-making processes.

In 1990 he suspended his academic career in order to build the Ernst & Young organization in Poland. In the years 1990 – 2003 he served as Board Member and from 1996 to 2000 as Managing Partner of Ernst & Young Poland. He was responsible for building the consultancy practice in Ernst & Young Poland and later moved to tax and accounting service. He is a licensed tax advisor.