Re:How I Built a Custom Camper Van (2015)
by jlangenauer on Tuesday August 30, 2016 @04:06AM
(#12388285)
No, US citizens can enter Poland (or more correctly the Schengen area), and stay there for 90 days in any 180 day period. This does not give you the right to work there.
As for working you could just incorporate. It costs maybe 30$ and most hacker-type polish friends can help you with that. Later it costs $250 per month to own a company (mostly social security fees and health insurance, not sure if this is obligatory for foreigners but probably yes, plus service to help you deal with paperwork).