In his position, he is responsible for managing Grid product development across all IBM business units, including Server Group, Software, Storage, Research and Global Services, on the integration of Grid technology and open standards, including the Open Grid Services Architecture (OGSA).

Prior to joining IBM's Grid organization in June 2002, he was a member of IBM's CIO executive office, where he oversaw management of IT server strategy, architecture and standards.

Mr. Greenstein joined IBM in 1988 and offers more than 14 years of experience in information technology, application development, automation systems for manufacturing, and process engineering in semiconductor manufacturing.

He holds a Masters Degree from RPI (Rensselaer Polytechnic Institute).