osoba sprzedająca in English:

He bought a copy from a newspaper vendor.

street vendors

I've bought some vegetables from a street vendor. The company is among leading software vendors.

I need to find a meat vendor in this town

the vendor gives the beggar water

In the streets, vendors sell Father Christmas hats, and reindeer horns!

Be careful about buying food from street vendors.

our local vendor offers good quality products

Istio is an open technology that provides a way for developers to seamlessly connect, manage and secure networks of different microservices, regardless of platform, source or vendor.

The ice cream vendor is waiting on customers at his outdoor stand.