Software engineer developing iOS apps at Dexcom. I've previously worked on map apps at ESRI, embedded avionics software for JSF, network planning software to optimize use of satellite constellations, compiler/debugger development at TeleSoft, operating systems at SofTech Microsystems, and other projects.

I specialize in communications and GPS navigation systems as a result of my experience with amateur radio (N6DM) and aviation.

I started out as a radio/computer technician, then programming in 6502 assembly, designing hardware and software for the single board Apple II many years ago. Then worked on operating systems at SofTech Microsystems, Ada compilers at Telesoft (aka Alsys, Aonix, Atego), before moving on to embedded software development and mobile applications.