If you are interviewing for a larger firm definitely bring up the fact that you have a stutter in the interview (as long as it’s not forced). Most large firms have very strict legal hiring policies and since stuttering is considered a disability by law, they cannot hire/fire you based on it. Someone I know who is a senior in HR actually told me once that if he had two equally qualified candidates and one had a stutter he would actually recommend hiring the stutter to avoid any (however unlikely) potential lawsuits.