are you a US citizen and if so plan to retain citizenship?
US citizens are taxed on their worldwide income. however, if they take a job in a foreign country they may be able to exclude this income by filing form 2555 with their return.
see this link to read who qualifies
don't know Ireland's tax laws. but no one works for nothing which is essence what you are trying to do with setting up a corp and not paying yourself a salary. also when you come back to the US and at that time draw out any remaining profits, they will be taxed.