This project-based course immerses students in an international, multidisciplinary engineering experience focused on the design and development of sustainable mechanical systems, for example, creating a prosthetic arm that is open-access, modular, and environmentally responsible. Students work in diverse teams to develop functional prototypes using CAD software (SolidWorks), implement design thinking methods, and participate in a dedicated prototyping workshop. Special emphasis is placed on communication and entrepreneurship, including pitch training and professional presentation skills. Students document the process through a comprehensive engineering report, prepare drawings, and deliver a final presentation to academic and industry experts.