A 3D CAD Designer uses computer-aided design (CAD) software to create detailed 3D models, technical drawings, and prototypes for various industries, including engineering, architecture, and manufacturing. They work closely with engineers, product designers, and other stakeholders to ensure designs meet specifications and industry standards. Their role involves modifying designs, improving product functionality, and sometimes assisting in the manufacturing process. Proficiency in software like AutoCAD, SolidWorks, or CATIA is essential.