[lsiq]

The gap is large enough that the efficient market argument doesn't hold very much water. A 5k difference should be enough to favor one candidate over another all else equals. If firms are efficient they wouldn't be paying 20k extra for males.

I do think wages are really very much a bottom up thing in that people can collectively raise their wages by simply not accepting lower pay. Putting a (reasonably) high price on your head is not only good for you but for others like you in the labor market. Firms are not really in a great position to keep wages down, the best they can do is make sure nobody knows what anyone else makes.

[htns]

As far as I can tell the data does not adjust for usual hours worked or overtime beyond restricting to only full time data points. Men working more hours than women is a consistent trend across pretty much the whole world.

[DelaneyM]

Says who?

No, really, you're begging the question here. "Gender bias isn't a big problem among senior developers, so it can't be such a big problem."