• Apple, X server bug fixes and feature enhancements• BriteSmile, Inc., Multimedia/video kiosk software for tooth-whitening in live video, deployed starting 2004 (Windows)/2005 (Mac)• Digital Style Systems Corp., Colorimetry software for PalmOS and Windows• IDEO/Palm, Windows camera conduit, shipped with the Treo 600 smartphone• L1ID, system used to print all US passports for nearly ten years, with no reportedbugs.• TDT/Viisage, several workstation programs for Windows developed using MFC, used by the U.S. government since 2003

Implemented new features and fixed bugs in software used in corporate, government, andacademic data centers, deployed on embedded hardware, VMs, and cloud systems.

Remote contract developer and engineering owner• Maintained and improved industry-leading editor for closed captions and subtitles.• Converted 32-bit Carbon/QuickTime program to 64-bit Cocoa/AVFoundation.• In 2015, MacCaption received an Emmy® Award for Technology and Engineering.

Remote contract software development* Prototyped and developed features for Virtuo embedded Linux digital jukebox.* Created Clutter-based custom actors.* Ported games to Android-based PlayPorTT tablets using SDL.

Software development for Kno's Linux-based ARM dual-tablet educational device.* Accelerated page turning by an order of magnitude* Designed and implemented a gesture recognition engine* Used and modified open source components including X11, GTK+, Clutter, and WebKit

• Designed, implemented, and maintain end-user applications, middleware components, open-source components and SDKs for Linux-based cell phones and other embedded devices• Engineering owner for company's modifications to GTK+ and related open-source technologies; technical representative to GNOME board and GNOME Mobile• Designed and wrote an X extension, X server drivers, and GTK+ runtime extensions to support multiple-overlay framebuffer architectures on XScale and OMAP ARM-based CPUs• Feature enhancements and bug fixes to a widget toolkit and applications based on Clutter and OpenGL/ES

ShadeTree did custom outsourced software development. Over its history, we worked on a wide variety of projects on Mac, Windows, Solaris, Linux, and Palm platforms. Selected projects include:• 3M, Printer driver development for large scale printers, used with Cactus printing system for MacOS 9• Adobe Systems, Inc., GIF-to-PICT and PDF-to-PICT translators for Adobe Fetch for Macintosh• Autodesk, Inc., ADI Driver. Ported from Intel Assembler to Macintosh• ECI, Inc., Advertisement repurposing features for Solaris-based e-commerce system• Financial Engineering Associates, Inc., Risk analysis tool for evaluating exotic financial options, using Monte Carlo simulation, for Windows and SunOS/Solaris• IDEO/Blocks Products, Conduit for eyemodule2 Handspring-based digital camera, developed for Macintosh• Informix Software, Inc., All Macintosh developer SDK ports from 1992-1999, including TCP/IP-based protocol development and support for all major compilers and Macintosh DLL architectures. Components include: ESQL/C, LibDMI, LibC++, CLI (ODBC driver)• Kinko’s, Windows-based package to assist with book-binding, written in Java• Motorola, Inc., Cross-platform course viewer for Windows and Macintosh, used by Motorola’s internal university• NuCore Technologies, Portable library for creating and displaying MJPEG-based QuickTime movies, deployed on MacOS, Windows, and embedded systems based on Hitachi and Fujitsu embedded processors• OneStop, Inc., Perl-based email notification system for an Oracle ecommerce application, implemented on Linux and Solaris• Ultimatte Corp., Knockout (raster image processing utility) for Macintosh and Windows, using PhotoShop and TIFF files. Developed using PowerPlant on Macintosh and MFC on Windows; product now owned by Corel

Maintenance and feature development on releases 10 and 11 of AutoCAD for the Macintosh, including design and implementation of the Macintosh ADI (Autodesk Device Interface) architecture. During part of this period, I was chief engineer for Mac AutoCAD.

Aria did the first all-digital financial trading system, which was based on Mac II's, and was deployed at Hambrecht and Quist in early 1989. I was a software developer, and later project lead for the user workstation component.

Data Tailor wrote and sold Trapeze, a presentation spreadsheet for the Macintosh.