To be honest, there isn't really much you can do. This is simply the sad reality for stutterers like you and me. Even if you are extremely qualified for the job, how much you stutter will definitely impact the outcome of the interview. Some unqualified, unintelligent, unprepared person will probably get the job over you simply because they can speak fluently. Best advice I can give you is to use strategies that have worked for you in similar situations in the past.