A wire harness design engineer works to design harnesses to protect electrical wiring and cable in airplanes, cars, and other devices that rely on electrical power. In this career, your duties focus on designing harnesses that allow the electrical distribution system to bring energy safely to the outlet where the mechanisms, product, airplane, or vehicle needs it. Your responsibilities involve using your electrical engineering skills to analyze the electrical needs for the project, calculate current requirements, and incorporate this data into your harness design.