"Work" in the immigration context is typically very synonymous with "derives income from a local [to that country] company"

For example, this site references "Grounds for issuing work permits to foreigners":

"Pursuant to the Act, a work permit is required if the foreigner: performs work in the Republic of Poland on the basis of a contract with an entity whose registered office, place of residence or branch, plant or other forms of organised activities are found within the Republic of Poland"

OP's employer having a "presence" in Poland may shift things but that would hinge on an analysis of if OP is actually employed by the same entity (making it a "branch") or an affiliated entity.