International Trade and Finance

Faculty Members




Professor Ünsal SIĞRI (Ph.D.) (Acting Dean) 

OSTIM Technical University Faculty Member and Vice Rector Prof. Dr. Ünsal Sığrı has received his Bachelor's, Master's and Doctorate degrees in Business Administration-Management and Organization. Then in 2010, he became an Associate Professor in “Management and Organization”, becoming a Professor in 2015. He completed his Post-Doctoral studies at Rochester Bittner School of Business-USA with a TÜBİTAK scholarship and served as a Faculty Member at the Military Academy and Baskent University of Ankara for many years. He was involved in important scientific projects at the Turkish Armed Forces and served as the Director of the European Union Office for Bosnia and Herzegovina. Sığrı gave seminars and participated in research projects in various international organizations such as NATO, United Nations, European Union and Council of Europe. He has published many international and national books, articles and papers in the fields of Management and Organizational Behavior.

E Mail:                  Direct Dialing: +90 312 386 10 92 / 1901 - 1950                   Office Number: 925





Assist. Prof. Begüm ŞAHİN (Ph.D.) (Department Head)


Begüm Şahin graduated from Boğaziçi University in International Trade with BA degree. She has MA in marketing and has studied on product strategies in international markets. She has experience in corporate life in family-owned companies and multinational firms. In 2012, she became an academic researcher in Çankaya University and also a founding member of Technology Transfer Office. She has worked in projects funded by TÜBİTAK, KOSGEB, Development Agency and European Union. In her PhD research she investigated market orientation of startups. She lectures on entrepreneurship and startups and also has roles in acceleration programs as a mentor, pitch jury etc. She is also interested in women entrepreneurship and social entrepreneurship. She is an international mentor of Cherie Blair Foundation for Women and ISSE- Erasmus+ Program. She continues to work as the Director of the Entrepreneurship and Leadership Office of our university.


E Mail:                   Direct Dialing: +90 312 386 10 92 / 1960                         Office Number: 923




Assist. Prof. Hasibe AYSAN (Ph.D.)

Hasibe Aysan graduated from Marmara University, Department of Business Administration in 2003 in first place. Between 2003 and 2012, she completed her master's degree in Istanbul during her professional career in the banking sector, where she has gained experience in international trade and foreign exchange, country loans, letters of guarantee, and domestic loans. Aysan completed her PhD in Management and Organization at Ankara Yildirim Beyazit University in 2019 and has worked in the fields of organizational theory, legitimacy and legitimation processes, professional division and history of business administration.

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Assist. Prof. Bahire Neşe ERBİL (Ph.D.)

Nese Erbil has been leading global dairy market research at Olam International Limited for the last 4 years. For most of her career, she has worked on commodity research in international organizations and multinational companies such as the World Bank and the International Monetary Fund. She graduated from METU Computer Engineering and holds a Master's degree in International Banking and Finance from the University of Birmingham and a PhD in Economics from York University.

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Research Assistant Seray YEŞİLIRMAK

Seray Yeşilırmak graduated from Gazi University, Faculty of Economics and Administrative Sciences, Department of International Trade in 2018. Immediately after her undergraduate degree in 2018, she started her Master's Degree at Ankara University, Faculty of Political Sciences, Master of Administration. At the same time, she worked in the foreign trade departments of various companies in the fields of export and international marketing. Now, she is still continuing her Master Programme at the thesis stage and make studies about exports of small and medium-sized enterprises.

E Mail:                 Direct Number: +90 312 386 10 92 / 1961                Office Number: 924





Visiting Professors



Assoc. Prof. Hakan KARATAŞ

Assoc. Dr. Hakan Karataş graduated from Istanbul University, Faculty of Arts and Sciences, Department of English Language and Education. He completed his master's and doctoral studies at Yıldız Technical University, Department of Educational Sciences, Department of Education Programs and Instruction. Throughout his education, Karataş served as an English teacher, lecturer, vice president and director in various fields. He worked as an Assistant Professor in 2012 and as Associate Professor in 2016 at Yıldız Technical University, Faculty of Education. Between 2009-2016, Karataş who worked as Assistant to Rector has served as a Board Member at Yıldız Teknopark and Yıldız Technology Transfer Office. He served as the Assistant to Rector at Gebze Technical University and Antalya Bilim University. He was a member of the Board of Directors of Yıldız Technical University Foundation and is a founding board member of Gebze Technical Education and Research Foundation. Karataş, who served as ASELSAN Consultant to the Board of Directors in 2018, was appointed as the Vice President for Corporate Management the same year. Karataş, who is a member of the board of directors of Teknohab Technology Development Zone Executive Inc., works as the Chairman of the Board of ASELSAN Social Innovation Leaders Association. Karataş has many national and international articles, notices, publications and projects. Karataş, who has studies on education and behavioral sciences, continues to work on program evaluation, motivation, academic motivation, success-oriented motivation, problem solving skills, adult education.