On the rare occasions I see jobs seeking people with Fortran knowledge it tends to be in scientific fields where they wants a scientist who can muck around with legacy code.
There needs to be! Silo'd in DoE labs, it's retiring with the greybeards ;)
Learning from NVidia (same with vulkan). Target: jetson real-time image analysis.
But it's so fast on device I would host production services in multi-gpu fortran without reservation (if i had wall street level math loads + gpu cluster):
https://on-demand.gputechconf.com/gtc/2013/presentations/S30...
https://researchcomputing.princeton.edu/education/external-o...
I found these two, amongst others, by googling "learning modern fortran"