Gearbox jobs involve a set of gears found in vehicles, also known as the transmission. Most of these positions are auto assembly and repair jobs. There are also gearbox jobs in industrial manufacturing. Specific job titles include gearbox builder and gearbox repair technician. The responsibilities of a builder are to follow blueprints for gearbox assembly and install bearings, gears, and other essential components according to specifications. The duties of a repair technician are to inspect and repair mechanical problems.