Work: I'm a retired software engineer.
In reverse chronological order:
I worked at UW-Madison from 1990 to 2018. For the first 18 years, I managed a computing service for researchers and sometimes taught obscure computer courses (Perl, UNIX). The next 10 years I designed and implemented software tools to help us have more reliable computing services. Here's my slightly modified retirement letter with more info.
I owned a tiny company called EventsGalore.net for 16 years.
During summers in college, I was a technician for a small company. I wired computers to CNC machines in machine shops in Ohio and Florida.