Paul has had a long career focusing on embedded computing. He has worked for and consulted with numerous large companies including Hughes Aircraft Company, Rockwell International, Intel, Microsoft, IBM, Atheros Communications, and Texas Instruments. In addition he has consulted with many smaller and mid-sized enterprises. Paul has founded two software companies, Blue Water Systems, Inc. and Codetelligence, Inc. Both were later acquired by larger public companies. Paul also taught Embedded and Real-Time Computing at the University of Washington for eight years.