director Chief Executive Officer
He attended primary school, secondary school and high school in Germany. During his high school education, he completed an internship at Siemens, where he currently serves as Chief Executive Officer and President in Turkey. After studying micro and macro economics at Berkeley University, Gelis graduated from the Business Administration department at the University of Phoenix Arizona.
Professional Starting his career in 1976, at the Siemens global Private Branch Exchange Factory and R&Doctorate Center in Witten (Germany) in the field of telecommunication, Gelis served in the department of research & development, production, Private Branch Exchange systems, planning, logistics organization and strategic purchasing groups successively. After studying microchip production process in the United States between 1987 and 1990, he worked as project director at ROLM System in Santa Clara, California which was a Joint Venture of Siemens and International Business Machines Corporation. He spend several years in market research in South America, where he was responsible for Original Equipment Manufacturer contracting. Returning to Turkey in 1993, Gelis worked as Sales and Marketing Manager of Simko"s Corporate Network Department until 1996.
Between 1996-2000, Gelis worked as the global marketing and sales executive of the cell phones and pagers division at Siemens in both Germany and the United States. In 1996 he was responsible for global marketing for Phone Mail systems
After being assigned to Siemens India as Chief Financial Officer and Vice President in 2000, he was included in Business Today"s list of the 10 best CFOs amongst the Fortune 500 corporations in 2005. In his previous role, Gelis was appointed Vice President and Chief Financial Officer of Siemens Canada Limited., finally being assigned as Chief Executive Officer & President of Siemens Turkey on October 1, 2007.
