I am a mechanical engineer. I worked 46 years in a machine manufacturing company for the packaging industry, die cutters, printing machines, folder gluer machines etc. for plain board, corrugated board and flexible materials..
I worked as a mechanical apprentice (4 years), then I studied mechanical engineering in an evening school (4 years), then as a designer for machines (10 years), then in testing and measurements (25 years) and then as a technical advisor (3 years).
I have been programming as a hobby programmer since the early 80s, but I made some programs for my professional life, calculation programs and data aquisition with graphical analysis.
Now I have been retired for already 14 years.