An Assembly Language developer writes low-level code that directly manipulates the hardware of a computer system. They convert algorithmic processes into assembly language, which is specific to a particular computer architecture. Their tasks include debugging, testing, and optimizing code to improve performance and efficiency. They also often work closely with hardware engineers to understand the inner workings of the computing system. Their role is crucial in developing real-time systems, embedded systems, and operating systems. As such, an Assembly Language developer requires a deep understanding of computer architecture and the ability to write complex, precise code.