A GLUT (OpenGL Utility Toolkit) developer is responsible for creating and managing graphical interfaces and graphics using the OpenGL library. They write code to generate graphics, animations, and interactive elements, ensuring optimal performance and quality. Their work involves handling tasks such as window definition, window control, and monitoring of keyboard and mouse inputs. They also debug and optimize code, resolve issues, and collaborate with other team members to create seamless user experiences. Additionally, they keep abreast with the latest developments in graphics technology to continuously improve and advance their applications.