Prior to creating FP Complete, Aaron was an executive with Microsoft Corporation where he helped to build Windows, MSN, Visual Studio, and the company’s Productivity Tools Team, and founded the Microsoft Big Gift Club for new philanthropists. He also served as general manager of Visual C++, used daily by three million professional software developers worldwide. He architected MSN’s move to Internet-based server software, and later served as full-time technology advisor to the CEO of Microsoft, Bill Gates.

More recently he helped to build Everyone Counts, Inc., which delivers secure, reliable election services by Internet and telephone, and served as advisor to the CEO of Benchmark Revenue Management, which streamlines and improves hospital revenue cycles through proprietary software systems.

He is an inventor of several patented innovations in computer networking and security, with additional patents currently pending. One of the creators of the “shareware” software business model in the 1980s, he has been an in-house executive of four early-stage software companies, typically as CTO and Director. Long ago, he was one of the first programmers hired by the National Center for Supercomputing Applications.

Aaron is a philanthropist and president of the Contorer Foundation. He is a cofounder and a director of Equinox Center, a nonpartisan policy center, and a director of Move San Diego, a transportation advocacy coalition. He was named Environmental Leader of the Year by San Diego’s Channel 10 News. In Seattle, Aaron helped to build the Kirkland Teen Union Building and served for eight years on the board of Sightline Institute.