Your age and experience again Nico?
not old enough for a mid life crisis yet, but older than you think I am.
background originally in civil/structural engineering, then I worked for a few years, came to France to do a masters in nuclear structural design. (I was the oldest in my class and having to learn how to learn again, in French, was probably the most difficult)
I am old enough to have worked on various energy three different continents and nuclear projects in particular, and old enough to know that not one single person can ever claim to have designed/built even one of these systems. Hence I always say that I worked on a project or I worked on the design (as opposed to "I designed") as that sounds like narcissism ). I am too young to have diabetes, heart attacks and play for the golden oldies.
Experience includes materials testing, advanced concrete mix designs, nuclear plant design, energy projects, working a bit with medical staff (cancer and radiation labs in particular etc), teaching refugees and a long list of stuff that will probably bore you like knowing 4 languages and having travelled to about 34 countries last time I counted.
I have a deeply contrarian nature, but you already know that.