During graduate school at Washington State University, he created the System V File system implementation for the early Linux operating system (prior to the 1.0 kernel). At IBM, Paul worked on projects to find mechanisms and approaches for reusing software efficiently. After IBM, Paul worked for Imation Corporation as an architect and project leader for a series of projects involving device management and network appliances. While there, Paul led an effort to build a network appliance based entirely on open-source software. Since Imation, Paul has worked on a variety of architecture projects relating to enterprise software. Paul is the coauthor of two books, The San Francisco Component Framework: An Introduction, and The Jiro Technology Programmer's Guide and Federated Management Architecture.