Design engineers develop ideas for new products and determine ways to improve existing products. As a design engineer, you put a creative perspective on your technical engineering knowledge to perform your job duties, which include creating sketches of design ideas and using Computer-Aided Design (CAD) software to generate plans for prototypes. To ensure the product is viable, you also evaluate other aspects of the product design, such as safety, cost, sustainability, aesthetics, and user experience. You collaborate with a team of technicians and other engineers to run tests, troubleshoot problems, and ultimately produce a newly designed product.