Check Austria. Without any expenses a dev with a US salary will pay more than 40% in taxes and social benefits.
Let's say you have 250k EUR, 12% of it you can take without any taxes (given no expenses, which is ~25k EUR), but then on 225k you pay 112.5k to the government. That's it. Then you take into account VAT and you realize they are really sucking you dry but all of the giants in collusion with Austrian banks avoid taxes easily.
Of course, you can game the system with fictitious useful expenses (travelling but saying you went to a dev conference etc.) but it's hard to really accumulate much if you live a somewhat normal life.