My take is it, that there are not 2 similar jobs in this field of aviation.
I used to fly for air taxi companies for 17 years (3 fixed contracts, 14, 2 and 1 years duration) and now I do fly for a large coorperation. I´ve seen something like 8 (I´ve probably forgotten some) operations as a freelancer, and common thing was that they were different. Some are very strucutred, almost like an airline (if they still are !) and some are pure chaos. The rest is somewhere in the middle...
I still do some freelance for owners and other coorperate FDs and none is like the other.
Coorperate Aviation is like a box of chocolates, you never know what you gonna get... as one dude once said...