I have stuttered my entire life too, and even though I have not had a, so to say, serious interview for a professional full time job, mostly for smaller jobs and things like that. The thing is, I usually don't stammer when I'm being interviewed or if I have to talk about myself. I've heard some guy, who also has a stammer, talk about himself. Herein he told that he was a Spanish teacher, of all things! He told me the sense of control in the classroom made him feel at ease, which helped his stuttering. I feel like this too when I'm being interviewed; I know why I'm there, I know what I'm doing, I can have control over the conversation. It's all about the mindset you have you enter such a interview. If you show confidence about your situation and you're up right about your shit, you will be regarded in a positive way! :D