Bülent Üstündağ graduated from Karadeniz Technical University, Faculty of Engineering, Department of Geological Engineering in 1989.

He worked as Sales and Purchasing Manager at Trelleborg / Vibracoustic for nearly 17 years. In 2011, he became General Manager of Ar-İş, and upon the Sampa - Ar-İş merger, he became the General Manager of Sampa, a duty he proudly continued for about 9 years.

As of 2020, Bülent Üstündağ is a member of the board.