Mattes was also named a board director, and will assume his leadership role with the company effective immediately. In addition, Henry D.G. Wallace, Diebold executive chairman of the board, will assume the non-executive chairman role effective August 15.

Mattes, 52, has a strong record of driving growth and improving profitability in large, global businesses. He has more than 25 years of experience in the information technology and telecommunications industries - primarily with Hewlett-Packard Co. (HP) and Siemens AG. Mattes most recently was senior vice president, global strategic partnerships at Violin Memory, a manufacturer of flash memory computer storage systems. He will remain with Violin in an advisory role.

"We are very pleased to have Andy on board to lead Diebold as we work to transform the company to one driven by software and services-oriented technology," said Wallace. "He is an experienced leader with a proven track record of generating sustainable, profitable growth through effective execution and strategic leadership -- particularly in a global software and services environment. He has the right combination of knowledge and experience at the major corporate level to lead our company during this period of swift change in the industries we serve." Mattes was chosen as CEO following a four-month nationwide search led by executive search firm, Korn/Ferry International.

"I am excited to join Diebold and lead the company at such a critical time," Mattes said. "Diebold has a tremendous history with a strong global brand and a solid services and technology foundation from which to grow. The company has taken a number of significant steps to help rejuvenate its business, and I look forward to continuing this work as well as implementing new approaches to strengthen our profile as a technology and service leader. The board of directors and I are committed to improving our performance and creating greater value for all our cu all our customers and stakeholders."

Mattes joined HP in Palo Alto, Calif., as chief sales officer of the Technology Solutions Group in 2006. From 2006 to 2011, he held a series of senior leadership positions with HP, including overseeing the company's outsourcing and applications services business. His most recent position at HP was senior vice president and general manager of Enterprise Services for the Americas. In this role, Mattes oversaw 40,000 employees and was responsible for approximately $10 billion in revenue.

He spent the majority of his career at Siemens, based in Munich, holding a variety of senior leadership positions from 1985 to 2005. These culminated into his role as chief executive officer of Siemens Communications Inc., USA, in Boca Raton, Fla.

Mattes also served as a member of the board of directors of Radvision, a video conferencing software design company, and as chairman of MphasiS Limited, an Indian infrastructure and business process outsourcing company.

Born in Nuremberg, Germany, Mattes received a scholarship from the Studienstiftung des deutschen Volkes to study business management science at Ludwig Maximilians University in Munich. He graduated from the university with a Diplom Kaufmann. Mattes, his wife Andrea and their three children currently reside in Atherton, Calif., and plan to relocate to Ohio in the future.