A few points about having have a beard, from my point of view:
a) shaving rash – doesn't matter what I do, shaving more than about twice a week leaves me with a face of raw meat or spots, and I've been shaving for about 32 years, so I don't think it'll 'settle down' anytime soon ! The only razor type I haven't tried is a cutthroat.
b) I'm a metalhead. Which in my book means long hair, decent beard of some style, or both.
I had a short goatee for years before I decided to do the job properly..now it's really quite a long goatee (tho' it got to about it's maximum length after about 6 or 8 months). It does get a trim from above the lower lip, otherwise it's in yer soup, beer etc, not to mention gets a bit wayward. Everything from chin downward can be coaxed kinda where it needs to be.
c) Having shaved off long hair a few times in the very distant past and later regretted it (and indeed, never needed to, as it transpired) I've finally take the view if an interviewer doesn't like it, then they're the sort of narrow-minded individual I wouldn't want to work for anyway.
View it as a dickhead filter, if you like..
IMO if it's a decent beard, trimmed, it shouldn't look scruffy as such.
But then I'm biased 😉