I think (my) common sense tells me those large corporation have some many applications that they will turn down anyone for any reason and in your situation they

I think (my) common sense tells me those large corporation have some many applications that they will turn down anyone for any reason and in your situation they would want to avoid, if ever asked, answering "yes" if someone ask "do you have felons working for you" [1]. I don't work for HR, but I could see the point where decision-making person is turned down by this, as I am sure they cherry-pick to the extreme (they do not hire on "we extremely need" basis, rather "we hire if someone has amazing skills and we can always use them"). If I were you, I wouldn't disclose until asked for, because this does not affect your work output, or your footprint on society. If you were a rapist or psycho then for society sake yes you should say something before you flip over and machine-gun half of Googleplex (but that's not your case). If asked for, I would be honest and straightforward (your pastebin story seems you were young and stupid, something we all go through (some caught and recorded in the system, most not)). Just be honest and explain them your situation and leave rest to them and God (if you believe in one). [1] I sympathize with your story. The longer I live on US soil (I am sure this is not narrowed down to US), the more I become aware jails and prisons are filled in with innocent people (I'm serious) or otherwise we all should be jailed for this or another reason. Good luck!