My company hires new grads around 50k and I guess decent startups who make people relocate across continents should pay at least 45k.
I hope you're not saying "low pay" because you compare to the USA. The Europe and the USA are not in the same league, they shouldnt be compared.
I'd say you need be be at least Manager/Director/VP of engineering, depending on the size of the company.
My company hires new grads around 50k and I guess decent startups who make people relocate across continents should pay at least 45k.