Program manager and office director for the ARPANET project, which developed an experimental computer network, a precursor to the internet. Engineer and founder of Telenet, a packet data communications carrier.
Researcher for the Defense Advanced Research Projects Agency (DARPA) an agency of the government that develops technology for the military. Engineer for SRI International, nonprofit scientific research institute and organization.
Member of Project Mac, a time-sharing systems project funded by the Defense Advanced Research Projects Agency (DARPA), an agency of the government that develops technology for the military.