A Microcontrollers and bits developer designs, programs, and debugs embedded systems using -bit or -bit microcontrollers. They write low-level code in languages like C or assembly, implementing algorithms, managing memory, and interfacing with peripheral devices. They work on tasks like setting up timers, handling interrupts, and communicating via protocols like SPI, , or UART. They use debugging tools to test and validate their work, often in real-time systems. They may also design the hardware around the microcontroller, including circuit board layout and component selection. They must understand the specific architecture of the microcontrollers they work with.