Osman Dereli completed his undergraduate education at Ankara University, Faculty of Political Sciences, Department of Business Administration, and his master's degree in Accounting at the University of Illinois in the United States.
He worked as an Accounting Expert in Istanbul between 1997 and 2008 and carried out tax audits of large companies.
Between 2008 and 2012, he served as Group Head at the Revenue Administration for 4 years, and during this period, he issued rulings on various tax issues.
He served as KGK Founding Vice President for 4 years between 2012 and 2016, and during this period, he took part in the preparation of independent audit legislation in our country and the establishment of auditing standards and accounting standards.
He served as the Chairman of the Financial Crimes Investigation Board (MASAK) between 2016 and 2020. During this period, he specialized in both FATF standards and MASAK's regulations and practices regarding Laundering and Terrorism Financing legislation, such as money laundering, AML/CFT compliance, and international money transfers.
Osman Dereli, who served as the Minister's Advisor between 2020 and 2023, also served as the President of the Bail Fund.
He joined RYMreform as a partner in July 2023.