Ask HN: Does the scientific part of Comp Science have no place in industry jobs?

These days, all jobs I see (at least in my area) is anything related to web and mobile development, like frontend, backend, DevOps, iOS and android. And these jobs can be grabbed without much knowledge of computer science fundamentals or mathematics thanks to libraries and frameworks.

What other fields I'm talking about? Computer Graphics, Computational Science, Theoretical Computer Science or any "core" field. I'm very passionate about getting a masters degree in any field of the above, but they hold no value to the jobs that I mentioned, especially that they are the only ones available here.

Do any jobs that require strong theoretical and mathematical knowledge of computer science exist today? If so, in what quantities? Are they rewarding as the common software engineering jobs, or not worth it, even after getting masters?