Dr Nataša Krejić, professor at University of Novi Sad Faculty of Sciences Department of Mathematics and Informatics. She is vice president of European Consortium for Mathematics in Industry, 2018-2019. Vice dean for Finance, Faculty of Sciences University of Novi Sad 2015-2018. Research interests in the field of numerical optimization and optimization for Big Data problems. Dr Natasa Krejic is visiting professor at State University of Campinas, SP, Brasil, Technical University in Eindhoven and Central European University Budapest. Project leader for Tempus CD JEP Mathematical Curricula for Technological Development, 2003-2006, research projects “Numerical Methods, Simulation and Applications” 2011-2018, team leader at UNSPMF for Intereg CBC Croatia Serbia Real-time measurements and forecasting for successful prevention and management of seasonal allergies in Croatia-Serbia cross-border region, 2017-2020, leader of bilateral Croatia Serbia project Variational calculus and optimization, 2016-2017. Teaching courses of Numerical Analysis, Numerical Optimization and Mathematical Models in Finance at Master programme of Applied Mathematics and Data Analytics, as well as Numerical Optimization at PhD programme of Mathematics. Supervised 7 PhD thesis and over 20 MSc thesis. She published over 60 papers in per-review journals in the field of numerical optimization and mathematical modelling. Natasa Krejic has  Associate editor for Computational and Applied Mathematics since 2014. She is member of the National Scientific Board for Mathematics, Mechanics and Computer Science, 2010-present.