Putting aside the clear invitation to dunk on Euros the answer is pretty straightforward: 1.) The market rate on software engineering is lower in Europe. There

Putting aside the clear invitation to dunk on Euros the answer is pretty straightforward: 1.) The market rate on software engineering is lower in Europe. There are probably some cultural factors at play here (larger talent pool, less entrepreneurship). 2.) Taxes are a bit higher and the company must foot the bill even if that doesn’t show up in your take home directly.