He graduated from the Mechanical Engineering course in the Faculty of Engineering in Boğaziçi University. After graduating in 1984, BÜYÜKABACI did a master's in the same field and worked as a research assistant in the same department for a while.
As of 1989, he worked as a manager in various capital markets and investment companies.
He focused on Asset/Portfolio Management and investment, and in 1993, he joined Yıldız Holding as the founding general manager and board member of Taç Investment Partnership.
In addition, during his position in Yıldız Holding, he worked as a Capital Market and Finance Consultant in the areas of money, capital and stock markets. He also worked as a Board Member in Family Finans and other group companies.
Büyükabacı formed Bizim Marketable Securities and worked as the founding general manager and board member. In Yıldız Holding, he formed the land estates group and instituionalized the land estates operations of the group. He became the founding President for the Land Estate Group and left Yıldız Holding at the end of 2010. He is still involved in the land estate and capital markets investments with his self-owned investment company.