An Assembly developer specializes in programming microcontrollers using Assembly language. They write, test, debug, and optimize low-level code to control hardware and peripheral devices. They also design and implement algorithms for real-time operations. Their work involves understanding hardware schematics, developing firmware architecture, and producing efficient code for performance-critical applications. Additionally, they handle tasks like interfacing microcontrollers with sensors, motors, or other components, and may also be responsible for documentation and code maintenance. Their role is crucial in embedded system design in industries such as automotive, robotics, telecommunications, and consumer electronics.