He graduated from Ankara University in 1976 as a “Physicist” and in 1977 as a “Physics Engineer (M.Sc.)” in applied physics. He received his Ph.D. in 1982 from the Department of Applied Physics and Electronics at Durham University (United Kingdom), and was subsequently awarded the title of Associate Professor in applied solid-state physics in 1986 and of Professor in 1995. In the course of his academic career, he has served as a faculty member, researcher, senior research specialist, administrator and senior executive at universities abroad (Durham University in the United Kingdom, the University of Lecce in Italy and the University of Stuttgart in Germany) as well as at universities in Türkiye (Selçuk University, Muğla Sıtkı Koçman University and Kadir Has University). Between 2002 and 2010, Prof. Oktik served as Rector of Muğla University for the third and fourth terms. In industry, he has held positions as a senior expert scientist, senior expert technologist and senior executive in international research and technological development laboratories (in the United Kingdom: BP Solar Sunbury, Imperial Chemical Industries PLC Paints Division Slough and the Industrial Research Labs of Durham University; in Germany: the Center for Solar Energy and Hydrogen Research Baden-Württemberg (ZSW)) and in national ones (Anel Group, Arıkanlı Holding and Şişecam).
Throughout his career, Prof. Oktik has held positions in numerous professional and civil society organisations. His current international memberships and roles include the International Commission on Glass (ICG), the International Conference on Coatings on Glass and Plastics (ICCG), the Society of Vacuum Coaters (SVC), Advisory Board Membership of The Center for Functional and Surface Functionalized Glass (FunGlass), Scientific Committee Membership of the European Photovoltaic Solar Energy Conference (EU-PVSEC), and the Türkiye representation of the European Physical Society (EPS). His national memberships and roles include Honorary Chairman of the Turkish Solar Energy and Storage Manufacturers Association, Board Membership of the Türkiye Clean Energy Foundation, Board of Trustees Membership of the Sıtkı Koçman Foundation and the Turkish Foundation for Basic Sciences Research, Advisory Board Membership of the Science, Technology and Innovation Policies Council (BTYPK), Chairmanship of the Advisory Board of the Turkish Physical Society, Board Membership of Şişecam, Advisory Board Membership of İş Enerji, and Board Membership of Birleşim Yel-şil Enerji. The author or co-author of more than one hundred national and international articles and two world patents in his field, Prof. Oktik currently serves as a faculty member at Maltepe University.