Knut-Andreas Lie is Chief Scientist at SINTEF in Oslo, Norway, where he heads a research group in computational methods for geoscience applications. Over the last twenty years he has developed commercial and inhouse software solutions for the international petroleum industry. In particular, he is a founding father of two open-source community softwares: MRST and OPM. Lie holds a Ph.D. in mathematics from the Norwegian University of Science and Technology in Trondheim, where he also has a position as adjunct professor. He has authored 140 scientific papers and supervised sixty-five M.Sc. and Ph.D. students. He currently serves as Executive Editor for the SPE Journal of the Society of Petroleum Engineers.