operater

1. (telecommunications) operator; carrier
   Koji mobilni operater ima najbolju mrežu? — Which mobile operator has the best network?
   Promenila sam operatera zbog cene. — I switched carriers because of the price.
2. operator
   Operater u kol-centru mi je brzo pomogao. — The call-centre operator helped me quickly.
   Radi kao operater na bageru. — He works as an excavator operator.
3. (in medicine) operating surgeon
   Operater je bio zadovoljan tokom operacije. — The operating surgeon was pleased with how the surgery went.

In everyday speech it most often means a mobile phone company.