If you decide you're interested in a juridical career, it means that you want a job working as a judge or a lawyer.
Use the adjective juridical to describe something that's connected to the law. You could describe a defendant in a trial as having a juridical advantage if all the evidence presented seems to be in her favor; the juridical result might be that a jury finds her not guilty. The Latin root of juridical is iuridicalis, or "pertaining to justice," which in turn comes from ius, "right or law," and dicere, "to speak."