Leo A. Notenboom is the owner of Puget Sound Software, LLC and the Leo in Ask Leo!.
Leo has been in the personal computer and software industry since 1979, as a software engineer, a manager of software engineers, and as a consultant.
In 1983 Leo joined what was then a medium sized local company called Microsoft and spent the next 18 years in a wide variety of groups working on a wide variety of software. If you're running Microsoft Windows, if you've used a Microsoft development tool or Microsoft Money, or if you've ever purchased a ticket through Expedia, there's a good chance you've been touched by some of his work.
And of course, since 2003, Leo has been answering your tech questions on Ask Leo!