Hybrid electric vehicle jobs focus on the engineering, design, testing, repair, marketing, and sales of hybrid and electric vehicles (EVs). The duties of an EV engineer involve creating specific aspects of electric and hybrid cars such as the battery or powertrain, while a lead designer or engineer oversees the entire project. Electricians design and build components for electric autos and develop systems to provide the car with energy through a battery or plug-in charging system. Hybrid electric car salespeople help customers choose the EV or hybrid that best fits their needs and explain the details of EV ownership.