I don't know; they keep that data pretty close to their chest. You wouldn't get up into the eye-watering RSU/option grant territory until you made director, but the engineers (and team leads, &c.) are well compensated. The stock going berserk has changed the equation, of course.

EDIT: Oh, how about I answer the question? Compensation is highly discretionary, so it varies pretty widely. But the real cheese is in equity grants, and those are heavily weighted towards management. A common complaint is that there's no realistic path up out of being an "individual contributor".