A GNC (Guidance, Navigation, and Control) Engineer is responsible for developing algorithms and systems that enable vehicles, such as spacecraft, aircraft, or autonomous robots, to navigate and control their movement accurately. They design control systems, work with sensors and actuators, and develop software for real-time decision-making. GNC engineers use techniques from control theory, signal processing, and machine learning to ensure precision and stability in dynamic environments. Their work is crucial for missions requiring autonomous operation, such as space exploration, missile guidance, and drone navigation.