Sushil is a professor of Strategic, Flexible Systems and Technology Management, and the Chair, Strategic Management Group at the Department of Management Studies, Indian Institute of Technology Delhi. He has served as a Visiting Professor and delivered seminars in many leading universities; some representative ones are University of Minnesota, Minneapolis, MN, Stevens Institute of Technology, NJ, University of Lethbridge, Alberta, Université Paris 1 Panthéon-Sorbonne, Paris, among others. He is an active researcher and supervised more than 50 doctoral dissertations. He is having eighteen books to his credit in the areas of Flexibility, Strategy, Systems Thinking, and Technology Management. He has over 250 papers in various refereed journals and conferences. He is the Founder Editor-in-Chief of Global Journal of Flexible Systems Management and serving on the Editorial Boards of leading international journals. He has pioneered the area of 'Flexible Systems Management' and made original contributions to the field of knowledge in the form of interpretive approaches in management such as SAP-LAP models/linkages, Total Interpretive Structural Modeling, and Interpretive Ranking Process. He has evolved the concept and framework of 'Flowing Stream Strategy' as strategic flexibility to manage continuity and change. He has also provided mantras for continuous organizational vitalization (LIFE), and models for strategic performance management (Flexible Strategy Game-card), sustainable enterprise (Star Model) and strategy execution (4A's Model). He has acted as a consultant to both governmental and industrial organizations; a few representative ones are Ford Foundation, APCTT, UN, Defense Research and Development Organization (DRDO), Wipro Infotech, LG Electronics, Rockwell International, Tata Consultancy Services, James Martin & Co., Gas Authority of India Ltd. and Sona Koyo Steering Systems. He is the Founder President of the professional body, 'Global Institute of Flexible Systems Management'.