Hizir Sofyan (Prof., Dr.) is listed as a member of the Expert Board of ICMI's Aceh regional organisation (Orwil) for 2026–2031. He is a professor of statistics at the Faculty of Mathematics and Natural Sciences of Syiah Kuala University, with a bachelor's in statistics from ITS Surabaya and a doctorate in statistics from Humboldt-Universität zu Berlin (2003). At USK he headed the Mathematics Department (2004–2011), was Dean of the faculty (2011–2014), Vice Rector for Academic Affairs (2014–2018), Vice Rector for Planning, Cooperation and Public Relations (2018–2022) and Director of the Graduate School (2022–2026). His research covers computational statistics, disaster statistics and big data, and he is active in the International Association for Statistical Computing (Asian section) and the International Statistical Institute.