I a medium size vertical software company I worked at no more than 20% were software engineers when it reached the mature stage. Some were software support peop

I a medium size vertical software company I worked at no more than 20% were software engineers when it reached the mature stage. Some were software support people like program managers, testers, technical writers, Training. Some were company support like executive, HR, sales, IT. And then were services side of People who used the software embedded within customer companies because the customers wanted to outsource that role.