Having graduated from Anadolu University, Faculty of Economics and Administrative Sciences - Department of Economics in 1992, Demir completed his Masters in Economics in 1995 and his PhD in Economics in 2004 at Marmara University. In 2023, he received the title of Associate Professor in the Field of Accounting Science.

Assoc. Prof. Zekeriya Demir started his career in 1996 as an Auditor at Sahra YMM, a CPA company. He served as Internal Auditor and Shipping Operations General Manager at Gürsoy Group Companies between 2000-2006. He worked as the Financial Affairs Director at Türker Group of Companies between 2006-2007. Appointed by the TMSF (SDIF), Assoc. Prof. Demir also served as a Member of the Supervisory Board at Nergis Holding and its affiliated companies between 2005-2008.

Assoc. Prof. Demir worked as an Assistant Professor and Deputy Dean at Kırklareli University, Faculty of Economics and Administrative Sciences, Department of Business Administration between 2009 - 2015. He worked as the Financial Affairs Manager at STM Defence Technologies Engineering and Trade Inc., an affiliate of Undersecretariat of Defence Industries in 2015 – 2016.

In August 2016, Assoc. Prof. Demir was appointed as the SVP of Accounting and Financial Control department. As of April 2022, he has been appointed as Chief Financial Officer of Turkish Technic.

Demir, who is a Certified Public Accountant and Independent Auditor, served as a Board Member of the Istanbul Chamber of Certified Public Accountants between 2013 and 2016. Continuing his academic studies, Demir has been publishing papers presented in national and international congresses and articles released in various journals. Assoc. Prof. Demir speaks English fluently.