Where can I see the average wages in IT by city of the world?

Question

Java

I saw somewhere a resource where you choose a specialization, for example, Sr Java Dev or Project Mgr, etc., and a bunch of infographics come out with the level of salaries in the cities of the world, the complexity of finding specialists, etc. Can't find it, who knows? Not a glassdoor, he doesn't know how to build one.
It should be something like:
Input: Sr Java Dev
Output:
Los Angeles: $100.000, takes 3 weeks to find
London: $95.000 (£56.000), takes 2 weeks to find
Berlin: $93.000 (E59.000), takes 1 week to find
Paris: ...
Seoul: ...
Tokyo: ...
Moscow: ...
Bangalore: ...
Babruysk: ...

Answer 1

Not a very accurate answer, but still useful information, I think. The level of average salaries in Europe: periskop.livejournal.com/1306885.html