All those sites I have looked at severely underestimates pay, or maybe only people who are getting shafted and are unhappy contribute data to them. Just look at

All those sites I have looked at severely underestimates pay, or maybe only people who are getting shafted and are unhappy contribute data to them. Just look at Google, Apple, and Microsoft on the page you linked. I guarantee you there is no equivalent of a senior developer at any of those companies making <100k in the US.