Throughout the 2001 economic crisis, Oktay was involved in crisis management roles while also serving as the head of the Management Department and Deputy Dean at Beykent University. Alongside his academic career, Oktay also served as a consultant and advisor for both state-owned and private businesses, serving in the capacities of general manager, vice president and executive board member for many of them.
Private sector
From May 13, 2001 to October 1, 2003, Oktay remained in the management of Yimpas Necessity for a year and a half. Oktay served as deputy general manager responsible for strategic planning and business development, production planning and information technology as well as sales and marketing at Turkish Airlines between 2008 and 2012. Being responsible for many development projects under the Turkish Airlines Brand, he also served as an executive board member of the And the Turkish-English, Turkish-German and Turkish-Spanish business councils. Oktay also served as an executive board member of Turkish Aerospace Industries, of Turkish Technic and as the vice president of Türk Telekom.
Civil service
Between 2012 and 2016, Oktay served as the Head of the Presidency of Disaster and Emergency Management. During his role, he formulated several agreements in the field of risk and crisis management with other countries on behalf of the Turkish government.
Undersecretary to the Prime Ministry
Following the appointment of Binali Yıldırım as Prime Minister of Turkey, Oktay was appointed as his undersecretary on 18 June 2016. He became known for his modernisation of bureaucratic institutions with new digital and technological advances. He was part of the main diplomatic resistance during the Turkish coup d'état attempt on 15 July 2016. During the Turkish Armed Forces counter-terrorism operations, namely Operation Euphrates Shield and Operation Olive Branch, Oktay served in the capacity as co-ordinator between different bureaucratic institutions that were involved.
Early general elections took place on 24 June 2018 to elect the president and 600 members of parliament to the Grand National Assembly. The Justice and Development Party candidate Recep Tayyip Erdoğan won the presidency with 52.59% of the vote outright, nullifying the need for a second round. His party also won the most seats in Parliament, falling short of a majority with 295 MPs. With the election of Erdoğan as the first president to take office under the new executive presidential system, it was speculated that he would adopt a predominantly technocratic cabinet and seek a 'United States' model by appointing just one Vice President, despite the constitutional changes allowing multiple vice presidents to serve at once. Oktay was unveiled as Turkey's first Vice President on 9 July 2018 with the announcement of the new cabinet, and was sworn in to office the next day.