Or you actually work as a software engineer or for foreign companies as an expat.
Even Google doesn't pay that well in Warsaw. You're much better off getting some sort of pseudo-b2b arrangement to a local software house. That gives you a ridiculously low income tax rate of 19%, too.
Of course, B2B contracts are event better, mostly because of lower taxes but they have their own disadvantages (often they can be terminated within a week, you don't have PTOs etc.)
Still less than what you can make working remotely for western European companies.