Ask yourself what the real subtext is; what most people are going to think when they read "But actually almost all my time, like 80% of it, is spent on engineering and design".

Is the mental image that of Tony Stark, single-handedly designing rocket components in some kind of advanced cad/cam-ish lab, scoffing at staid business meetings he delegates, or is it of a guy talking to a bunch of engineers, and hearing presentations, picking favorites among a bunch of proposals, signing off on this or that?

You are supposed to think of the former (PR), whereas the latter is closer to the truth.