operador
/opeɾaˈdoɾ/ · B2 · noun · m
operator
☎️⚙️ operar (to operate) + -dor (the one who does it) = the one who operates
Spanish -dor works like English -or/-er and marks the person or thing doing the action, as in jugador (player) and trabajador (worker). It comes from Latin operator. Stress the last syllable: o-pe-ra-DOR.