My background is mechanical engineering and project management of process plant construction. (Anlagenbauingenieur und Bauleiter).
I was born in Hamburg, Germany - but my parents immigrated to the USA when I was 2 years old (1949). We always spoke German with each other at home, but I never had foreign language training in German. (Deutsches Rechtsschreiben fehlt oft). I worked in Germany from 1989 to 1996 as an "Anlagenbaukonstrukteur" in Hamburg and Munich.