Earlier quoted context omitted.
I have 16 years of engineering experience and Google has made me two offers (original and revised) for a T4 position in NY that are well below the numbers reported on Levels (in fact, below the average on the site). So, either I am getting low balled like hell or there is skew in the numbers. Edit: there is skew in the numbers, not some in the numbers.
My company is allegedly aligned with Google’s levels here, and people routinely make Senior within 4 years. Spending more than 2 years at Eng I or Eng II is considered a cause for serious concern. So T4 after 16 years is very surprising. Something is off.
Assuming your experience translates well, people frequently go for promo within a year or two.