If you want to move to Europe and work for a "leading startup" or a big tech company -- anything established that pays market rates for senior talent -- then yo

If you want to move to Europe and work for a "leading startup" or a big tech company -- anything established that pays market rates for senior talent -- then you should also ask your favorite immigration lawyer about Germany's Permanent Residency for Highly Talented professionals, aka "Paragraph 19." This gets you permanent residence, the same thing as a US Green Card. The minimum qualifications IIRC are an advanced degree in something tech/science-y, and a "high" salary in the legitimate job waiting for you anywhere in Germany (meaning you have to get the job first). For scientists the salary limit is lower than for engineers. But of course the food is much better in France.