Developed contract and in-house software for iOS and Mac OS X on the following projects:Co-developed with Tinrocket, LLC:* Waterlogue – Waterlogue has been the number one ranked overall iPhone app in Japan and China and the number two overall iPhone app in the US, as well as the number one Photography app in a number of countries including the US, Japan, China, France, Ireland, Taiwan, Thailand, Hong Kong and South Korea. Waterlogue was in-cluded in Apple's Best of 2014. Responsible for app structure including OpenGL pipeline and shaders, operation queue, parts of the UI, leak and performance testing with Instruments. https://itunes.apple.com/us/app/waterlogue/id764925064?mt=8&uo=4&at=10l647iOS apps for Chromatic Bytes (complete design and development): * ZeusDraw Mobile - (iPhone vector drawing program): https://itunes.apple.com/us/app/zeusdraw-mobile/id292747364?mt=8 * Orfeo - (metronome and pitch source): https://itunes.apple.com/us/app/orfeo/id284688878?mt=8 OS X programs for Chromatic Bytes (complete design and development): * ZeusDraw - full-featured color managed vector drawing program: http://www.chromaticbytes.com/zeusDrawTour.php * Shades - color grid extension to OS X color picker: http://www.chromaticbytes.com/shadesTour.php iOS contract development: * University of Cincinnati, Physics Department – 3D app using SceneKit for teach-ing partice physics track analysis (sole developer, in progress) Screen shot:http://www.chromaticbytes.com/LHCB/LHCBScreenShot.PNG* Estee Lauder, Inc – 2D graphics (Core Graphics layer blending, rendering through a mask) for internal make-up app.* Tinybop, Inc - extensions and changes to common dashboard for a set of apps using Cocos 2D.

* Senior iOS developer contracted to New London Associates – principal developer on projects for:* TheStreet.com – Design and development of entire app (except for database part), including app structure, UI implementation, live scrolling graphs using Core Graphics, spreadsheet-like widget with dragable rows and columns using Core Animation, integration of third party video player, text layout with Core Text, and integration of Omniture analytics. * Heritage Auctions – Catalog app. Design and development of entire app (except for database part), including app structure, UI implementation, extension and integration of open source Cover Flow look-alike, slide show, and data downloader. https://itunes.apple.com/us/app/heritage-mobile-catalog/id488825756?mt=8* AT&T, Inc – Provided code review and training for an AT&T developer and contract development for internal enterprise app.* Oracle, Inc. – sole developer for modular iOS graphing package to draw line, area, bar and pie charts using Core Graphics.* DrawQuest, Inc – performance consulting for brush drawing speed in drawing pro-gram.* Avventa – finished one of the games on National Geographic's Look & Learn: Animal Alphabet game. https://itunes.apple.com/us/app/look-learn-animal-alphabet/id546485388?mt=8&ign-mpt=uo%3D8* Woern, LLC – performance testing and improvements for baseball app.* Spotworks, LLC – Additions and bug fixes for Electric Sheep app: http://www.electricsheep.org/credits* CannedBananas, LLC – Finished game Lock'n'Roll 2 after the original programmer left the project: https://itunes.apple.com/us/app/lnr2/id3560712

Bug fixes and enhancements for software controlling automated chip tester.

CAD consulting firm. Developed geometry and graphics libraries for Ford Motor Co.

Developed drawing and design program for the textile and surface design industries.

Redesign and repair of SolidDesign, Computervision's B-rep solid modeler.