The "zones" are way too big.<p>For example working in west Germany is quite different to working in east Germany. The same goes for north and south Spain, north and south Italy, and so on.
I'm surprised to see Poland ahead of so many richer countries, like France, Italy, Spain and Portugal. CoL is also almost certainly lower in Poland.<p>Polish SEs are very good, that's not my point! Rather, I am surprised Polish salaries caught up and exceeded many Western European economies on a national basis, and more so adjusted for CoL.
Take care, if some numbers seem a bit high, it's because the median pay here is only based on those who submitted their data to levels.fyi which tends to be mostly FAANGs and big-tech it seems therefore skewing some numbers really high, not based on national statistics for SW jobs of each country which would also include all of of mom and pop shops, bringing the numbers down to realistic levels.
It is so disheartening to see Europe's tech industry flounder so much. Living in Europe and then seeing how the salary gap with the USA is just increasing is flat out demoralising. However I do not see a way out until salaries start increasing.