In reverse chronological order, my jobs were:

• 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.

• During part of that time (2001-2017), I also owned a tiny company called EventsGalore.net (website framework is still up). It helped connect people with events at organizations in which they have an interest and it really worked... attendance increased! It was feature-rich, supporting event categories, custom colors, website integration, and lots more.

• Before that, I worked at RR Software; I ported their Ada compiler to Intel's 80386 microprocessor on Windows and UNIX. 

• Before that, I worked at Amtelco where I wrote firmware for a communications board and helped OEM customers who purchased our computer boards.

• 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.