There are Three Academic Paths (basically the three universities.) I intend for all 8 of the sciences listed to have a branch here.
Generally speaking, it will progress from Batchelor's to Masters, to Doctorate, to Tenure, to "Science" Directorship (which is the highest Academic rank a person can obtain, in my setting, as it is essentially a seat on the "Science Council" that advises the Republic on technological progress and funding of said research.)
the Commercial side will be much more ... chaotic..... since nearly every level/step up in rank will be interchangeable. generally, the third tier is a form of upper middle management. (Captian of a freighter, or Administrator of a Facility)
There will also be a split for each type into three, Independent (Start their own Company), Corporate (Work for a Mega-Corporation), Public (Work for a Mega-Corperation owned and operated by the Republic). So the MC could even have the chance to build their on "little" business before the end.
Also, the Player can choose to at any time they go back to select a new "job" or to continue their old one, select to Join the Phoenix Project, at which point Chapter 2 starts.