Steven Jay Sinofsky 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, and online services such as Outlook.com and SkyDrive. Sinofsky is currently a board partner at Andreessen Horowitz, where he serves on boards of investments.
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. Sinofsky was actively involved in recruiting for Microsoft. His particular task was to convince engineers not to move to Google. Sinofsky has blogged in detail about his efforts at , about what it's like to be a Microsoft employee, and what new hires in general most of the time never suspect or know about Microsoft, Bill Gates, Steve Ballmer, and Windows.
Sinofsky at the Windows division
Steven Sinofsky became the president of the Windows division in July 2009. His first heavily involved projects included Windows Live Wave 3 and Internet Explorer 8. Sinofsky and Jon DeVaan also headed the development of the next major version of Windows to come after Windows Vista, Windows 7. Sinofsky's philosophy on Windows 7 was to not make any promises about the product or even discuss anything about the product until Microsoft was sure that it felt like a quality product. This was a radical departure from Microsoft's typical way of handling in-development versions of Windows, which was to publicly share all plans and details about it early in the development cycle. Sinofsky also refrained from labeling versions of Windows "major" or "minor", and instead just called them releases. Under Sinofsky's leadership, the Windows Division successfully shipped the successor to Windows Vista, Windows 7, which had a rapidly growing user-base of over 450 million. The success of Windows 7 contributed to record-breaking revenue earnings for Microsoft in 2010. Sinofsky's leadership style influenced many other Microsoft divisions to follow his principles and practices on product development. Sinofsky and Windows executive Jon DeVaan worked as editors for the blog. Sinofsky worked on Windows 8 and regularly blogged about the feature set and the process of developing the new OS in his blog, . After Windows 8 reached the release to manufacturing milestone, it was indicated that Sinofsky and his team were working on a future version of the Windows operating system. Sinofsky left Microsoft on December 31, 2012. His departure was described by both parties as a mutual decision, but widely seen externally as the result of a power struggle or friction between himself – tipped as a future leader of the company – and CEO Steve Ballmer. Technology website Ars Technica drew attention to the sense of staffing changes after a major project – the Windows 8 rollout, but also noted the abrupt and exceptional manner of departure and a similar analysis of recent politics within Microsoft by ZDNet. Sinofsky was succeeded by Julie Larson-Green and Tami Reller. Larson-Green will run the engineering function of Windows, while Reller will oversee the business operations. Microsoft disclosed in an SEC filing that Sinofsky would have a one-year non-compete contract in exchange for an estimated $14M of stock.
Book
One Strategy: Organization, Planning, and Decision Making, published by John Wiley & Sons in November 2009, was co-authored by Sinofsky and Marco Iansiti of Harvard Business School. The book discusses Sinofsky's struggle with refocusing the Windows Division after the Vista debacle, and the planning and development of the next major version of Windows that would come after Vista. Sinofsky talks about the focus of making a desirable high-quality product, while making no promises to the public, and shipping and delivering that product on time.
