Can a felon become an engineer,contracter, architect, or construction manager?

There's certainly no reason you can't become those things, but it's possible that it'll be more difficult for you to find employment than it would be for a non-felon. It also depends on what, specifically, you've been convicted of. I think that, if you want to do those things, you ought to try for it. Think of it this way: -If you don't pursue the career of your choice, you'll have to settle for some other, lesser kind of employment. -If you do pursue the career of your choice, and you fail, you'll have to settle for some other, lesser kind of employment. But if you succeed, you'll have gotten what you want. Failing and not trying at all have the mostly the same outcome, so you might as well give it a shot.