Duolingo, Global. Alina von Davier joins Duolingo as the Chief of Assessment. Previously she led ACTNext, a multidisciplinary innovation unit at ACT. Her team was comprised of experts in fields ranging from psychometrics and learning sciences to software development, and artificial intelligence & machine learning. Alina and her teams have operated at the forefront of Computational Psychometrics, an emerging interdisciplinary field concerned with the application of theoretical and data-driven computational methods and statistical modeling of multimodal, large-scale/high-dimensional learning and assessment data. Prior to leading ACTNext, Alina was a senior research director at Educational Testing Service where she led the Computational Psychometrics Research Center. Previously, she led the Center for Psychometrics for International Tests, where she was responsible for both the psychometrics in support of international tests, TOEFL® and TOEIC®, and the scores reported to millions of test takers annually.