Marko Maucec is a Petroleum Engineering Consultant with Reservoir Description and Simulation Department at Saudi Aramco, Dhahran, Saudi Arabia. His main responsibilities cover the development and implementation of methods for uncertainty quantification, dynamic model inversion with assisted history matching, production optimization, and data- and physics-driven predictive modeling into reservoir simulation practices. Formerly, Maucec has worked internationally with Halliburton/Landmark, Shell International E&P, and in nuclear research and industry. He has authored more than 80 peer-reviewed and professional conference papers, co-authored a reference book on Intelligent Digital Oil & gas Fields, and is an inventor on 30 US patents and patent applications. Maucec holds Ph.D. and MSc degrees in Nuclear Engineering and BSc degree in Electrical Engineering. Dr. Maucec is an active member of SPE and has served on the Reservoir Advisory Committee to Technical Director for SPE’s Reservoir technical discipline. He is currently appointed editorial board member of Earth Sciences (EARTH) with Science Publishing Group.