The math simply never works out in favor of lower salaries/publicly funded healthcare for high paying US roles like software engineering. Even taking your (high, assuming family of 4) premiums and 0% employer contribution (very uncommon), that’s an additional $43k a year, pretax. US SWE salaries are double, sometimes triple international with absolute numbers at $50k+.
This doesn’t even factor in general higher tax brackets abroad
This doesn’t even factor in general higher tax brackets abroad