Internet software development. Developed the software for a spam-eliminating email service Mailscreen.net, while living on savings and working at home. This service works by requiring unlisted senders to pay for transmission of their messages. It promises to grow into a profitable business when further embellished. Written in Java, the service also uses Linux, PostgreSQL, Tomcat, SMTP.

During this time I worked as a software developer for Digitalesp in Raleigh, NC (June 2000 – November 2000), and Mobile Technology Group in Research Triangle Park, NC (November 2001 – February 2002). I also got income by creating and maintaining a web site for a friend's small business, and by teaching a Java course at Omega Computer Training, in Durham, N.C.

Think-tank management. Started the Free Nation Foundation, an IRS 501(c)(3) organization which works to clarify the vision of society with little or no coercive government. Raised funds. Chaired meetings. Organized forums. Edited and published a quarterly magazine. Wrote dozens of articles. Supervised organization of the web site, with almost 200 pages. I am now President Emeritus of this organization, with no labor-intensive duties.

Ran a business in residential building and remodeling. In 1986, I took a leave of absence from the Ph.D. program at UNC-CH, and took a job as a carpenter. After a year I was able to launch my own business, which grew. Eventually I designed, built, and sold spec houses. Employed as many as three full-time workers. Obtained North Carolina licenses as building contractor and plumbing contractor.

Engineering and project management, at Niagara Mohawk Power Corporation in Syracuse, NY. As a Scheduling Engineer, developed a critical path method program for scheduling manpower and resources, then chaired a task force which implemented a manpower planning system. Also worked in roles of Project Engineer and Corporate Planner.

Consultant to US government. For Booz, Allen and Hamilton, in Bethesda, MD, consulted with the US Department of Energy on the management of energy research projects.

Bioengineering Research. As a Research Assistant at Harvard Medical School, maintained lab equipment, assisted with a series of experiments on sheep, wrote programs to process data from experiments.

Radar repairman in U.S. Army.