Greek language proficiency can be helpful for career growth, but it is not always required for high-paying jobs. Many top-paying roles in IT, engineering, finance, and multinational companies primarily use English as the working language. International organizations, global service centers, and tech companies frequently hire English-speaking professionals without requiring Greek. However, jobs in healthcare, public services, and customer-facing roles often require at least conversational Greek. Learning the language can enhance integration, communication, and long-term opportunities, but foreign workers in specialized technical fields can still earn competitive salaries without fluency.