Steven Sinofsky

Steven Jay Sinofsky
Sinofsky making a "7" hand gesture at the announcement of Windows 7
Born	1965 (age 51–52) New York City
Alma mater	Cornell University
Known for	President, Windows Division at Microsoft

Steven Jay Sinofsky (born 1965) is a former President of the Windows Division at Microsoft from July 2009 until his departure on November 13, 2012. He was responsible for the development and marketing of Windows, Internet Explorer as well as online services such as Outlook.com and SkyDrive. Sinofsky is currently a board partner at Andreessen Horowitz, where he serves on boards of investments.

Sinofsky was born in the family of Marsha and David Sinofsky. He received his bachelor's degree from Cornell University (Arts and Sciences, 1987) and a master's degree in computer science from the University of Massachusetts Amherst (1989). He also spent 3 semesters learning Russian while he was in college.

In July 1989, Sinofsky joined Microsoft as a software design engineer.

In 1994, when the Office Product Unit was formed, Sinofsky joined the team as the director of program management, and led the design of the shared technologies in Microsoft Office 95 and Microsoft Office 97. He spent about four years as a software design engineer and project lead in the Development Tools group, where he helped lead the development of the first versions of the Microsoft Foundation Classes C++ library for Microsoft Windows and Microsoft Visual C++.

He previously oversaw the development of the Microsoft Office system of programs, servers and services, responsible for the product development of Microsoft Office 2007 and its new ribbon UI. Prior to that he also oversaw the development of Microsoft Office 2003, Microsoft Office XP, and Microsoft Office 2000.