A JavaTV developer designs, develops, and maintains applications for TV and multimedia services using the JavaTV API. They write robust, scalable code for interactive TV applications, ensuring smooth integration with different devices. They test and debug applications, fix bugs, and improve performance. They also collaborate with stakeholders to understand requirements and deliver solutions. They stay updated with the latest trends in Java and television technology, adapting their skills as necessary. They may also provide technical support, helping troubleshoot issues related to JavaTV applications. Their work contributes to enhancing viewers' experience with digital TV services.