It's hard to say. I came to europe as a technical account manager and transitioned to data engineer here (lately, shoving stuff around with redis/celery and reporting on it with redshift and superset). I doubled my income after six months here, but that was due to a new job. I'm around the 90th percentile for incomes of full time workers in my country (Ireland).

My best guess is I'd make around 50k more (usd) in the bay. Hard to say though.

I came here on a working holiday visa; check the website of your country's Irish embassy for more info. I got a bit lucky in that my old company had an office here (though I came under my own steam) but honestly got my best gig through a guy I met in a pub after overhearing a discussion about the pronunciation of JSON. That was in 2013 with a crap economy; now it's much easier. Hell, if you're decent with python (bonus if you've experience with Celery) drop me a line. Look in my profile.