I have just left a fintech company after 5 years and I can say after reading this, it looks legit to me (not AI slop as someone asked). These are the same sort of lessons I learned during my time in the industry.

I would recommend anyone starting in fintech to take some time to understand accounting principles and the ledger in a bit more depth than just debits vs credits - this is likely what is most unfamiliar to programmers.

Also financial software is very data-heavy and I learned more about databases in my time working in fintech than the 15 years before that. I think going into a bit more detail about even the basics (indexes) will save a lot of headaches.