I'm about to graduate from undergrad with a degree in CS and am considering a Scala job in the financial industry.
Ignoring the particulars of the offer and the company, I'd like to base my decision partly on the value of the skills I'd be learning. The job would center around ETL pipeline development and involves heavy use of Scala.
Is Scala in demand, either inside finance or in tech more generally? Will demand for Scala increase in the future?
If it's a good job, then take it. Build yourself up as a general programmer and you will never be out of work. If you become a X-programmer, you'll be in trouble in the latter half of your career, almost for certain.
And, yes, my friends who work with Scala all seem to like it.