I would absolutely go to the court hearing just to make special plea. Explain that you are an EMS Professional, you have taken defensive driving courses and you are not there to challenge the officer's findings, but asking if consideration can be given to dismissing the charge so that your record remains unblemished as it impacts potential employment.
Basically you are asking for a favor and presenting yourself as professionally as possible. Normally, I do not advocate accepting guilt when making a court appearance, however in this situation which such a low level offense and first timer in long timer situation...it is absolutely worth it.
I have been let off of more serious offenses by handling it this way. There is NO harm in trying, you have nothing to lose. The charge will not become any worse, it can only get better...so give it a shot!
Do NOT attempt to make an excuse for or attempt to justify the speed overage in any way. This will get your request shut down FAST!
And I do agree that most employers would not care about this one time offense, especially if it is as described...however, any chance I have to remove something negative, I go for it.