I was chosen several times for a job even if I stuttered, because I was the best. For engineering jobs, the skills and experience play a higher role than speaking. As a new graduate, you should have more skills than the others, such as Cad, cae, programming, internships etc. You should also show them that you can still express yourself, even if you stutter and you don't see stuttering as a problem, since you came up to here with stuttering.