Where did the term "software engineer" originate? Early part of my career, working at non-tech companies, everyone was a "developer". Many years later, I was

Where did the term "software engineer" originate? Early part of my career, working at non-tech companies, everyone was a "developer". Many years later, I was exposed to the world of Silicon Valley tech companies, where people were referring to themselves as "software engineers". Even now, at most non-tech companies the term "developer" is probably more widely used, though even these companies are now starting to switch to using "engineer". Most of the younger employees these non-tech companies hire use "engineer", but talking to the older veterans, they still refer to themselves as "developers" more often than not.