An Assembly developer writes, debugs, tests, and maintains low-level code for systems running on the Motorola family of microprocessors. They work closely with hardware, understanding the architecture of the processor to optimize performance and memory usage. They write assembly language programs, converting high-level language into machine language instructions that the processor can understand. They also debug and fix errors in these programs. They often work on legacy systems or embedded systems where precise control over hardware is required, such as video game consoles, synthesizers, and industrial control systems.