A GraphPad developer is responsible for designing and implementing software solutions for the GraphPad data analysis and visualization tool. They write, test, and debug code, ensuring its functionality and compatibility with existing systems. They also maintain and improve the software, fixing bugs and updating features based on user feedback and industry trends. Additionally, they collaborate with other team members, such as data scientists and UX designers, to optimize the tool's user interface and improve its data analysis capabilities. They may also create documentation to assist users and other developers in understanding and using the software effectively.