A GNSS (Global Navigation Satellite System) Engineer specializes in designing, developing, and optimizing satellite navigation systems. They work with technologies like GPS, Galileo, and GLONASS to improve positioning accuracy for applications in transportation, defense, telecommunications, and geospatial industries. Their role often includes signal processing, algorithm development, software engineering, and troubleshooting positioning errors. GNSS Engineers collaborate with multidisciplinary teams to enhance system reliability and performance.