Based on StackOverflow dev survey, EU salaries are roughly 60% of what you get in the US. You'll be hard-pressed to find equivalent positions paying the same in both regions.

Are those 1:1 comparisons? I know typically in the US salaries advertised are not exactly take-home pay, but before tax amounts, and is some places in Europe salaries are advertised as take-home pay.

Well it'll never be 1:1 due to differences in health care etc., of course, but those were all before tax from what I understood.

Not sure how companies advertising take-home pay would work when your tax rate depends on e.g. marital status (at least in Germany it could be off by maybe a factor of 2 in both directions), which country/region are you thinking of there?

The salaries in London for FAANG are equivalent to about 60-70% of those in the US. The stock grants are typically smaller, also, though this is less true for software engineers.

The one I used to work for had a real problem of developers leaving for the US on an internal transfer after 12 months, precisely because of the salaries.