Too many to list! Examples include: automobile industries (Hyundai, Kia, Daewoo, SsangYong, power generation and utility companies, engine companies (such as General Electric, Rolls Royce, Honeywell), aerospace airframe companies (such as Korean Air, Boeing, Airbus, Northrop-Grumman, Lockheed-Martin, SpaceX), HVAC (heating, ventilating, and air-conditioning) companies, and general manufacturing companies such as those that manufacture computers. Mechanical engineers also find employment in government labs such as the Korean Aerospace Industries (KAI), United States’ National Aeronautics and Space Administration (NASA) and the various departments of defense (Army, Navy, Marines, Air Force) everywhere.