Well, I'm only out at my job to one person, my highest manager, and that was because of a mistake on my injury report - they checked the male box, which legally isn't right, so I had to call her and ask if it would cause a problem, "This is awkward, but...on 'sex' they put 'male,' and well...I'm not a biological guy," She was like, "Ohhhhh...." But she understood, and I asked her not to tell anyone. She was very understanding about it all, which is awesome.
As far as the hiring process went, I got hired shortly after I stopped T after a year, I was already passing, so people just assumed that I was a guy. I was hired under different management, and they never asked when I gave them my license, even though the gender marker is still female, and I looked kind of girly on it...and even though the food handler's permit also mentions that my sex is female. No one ever asked. I get misgendered by customers, but my co-workers just stare at them and laugh. I'm nervous about getting another job, worried that I won't be so easily accepted if someone notices the marker on my license, not that most people do...but still.
As for future worries about a career, I'm still playing that by ear. I'm studying illustration, where I might end up in an agency, or possibly freelance (Where it really wouldn't matter) But I have plans to act, so...that in and of itself may cause some interesting dilemmas.