N83SF: Above all, never lie or try to hide the fact during an interview that you did not pass a checkride. Of course, you don't want to go into an interview and say, "Good morning, I'm John Smith and I failed my private pilot checkride," but if it does come up, be honest about it, take responsibility for it, and let them know it was very much a learning experience. You really need to capitalize on how you grew and matured from the experience. Interviewers like to see how you can handle an adverse, unpleasant event. I know it's painful, but never act like you are bitter about it (even if you are). And, it won't come up at every interview.
Not just for an interview, but even right now, try to make something positive out of this and use it as a meaningful learning experience.
To answer your questions, " will this hurt my chances of getting a job? Do many people fail checkrides?" in reverse order, the answers are,
"Do many people fail checkrides?" Yes, and
"Will this hurt my chances of getting a job?" No, but it's entirely up to you as to how you address the issue if it comes up, i.e., your attitude.