I cannot be more specific otherwise my identity would be obvious. The EU is not a unified job market, and the equivalent of those $20K is a massive improvement for me.
$20k raise is peanuts in US tech. If you're in it to chase the greenback, suck it up, transfer to US on L1 asap, get green card in 2-3y, get $100-200k raise on your first job hop after it.