A Maemo developer specializes in creating and maintaining applications for the Maemo operating system, a Linux-based operating system developed by Nokia for smartphones and internet tablets. They utilize programming languages such as C, C++, and Python to develop software. Their responsibilities include designing user interfaces, integrating software components, and debugging applications to ensure optimal performance. They also collaborate with other team members to define software requirements and ensure functionality. Furthermore, they may also develop patches for existing applications, contribute to software architecture, and ensure compliance with quality standards.