As the first engineer at a successful startup.

Responsibilities- * Take over everything technical I was good at and hired for. * Take over policy and progress on everything I was good at. * Be on call 24/7. * Do whatever the CEO/CIO didn't want to do.

Think this is pretty standard from my reading of other startups. The one lesson I should have learned and didn't is that as first engineer you should get 10% or more equity if you stay > 5 years.