Firmware engineers design and implement low-level software that interacts directly with hardware registers, peripherals, and sensors. They build bootloaders, manage memory layouts, implement communication drivers, and ensure deterministic behaviour in embedded systems. They work with oscilloscopes, debuggers, microcontroller families, and electrical schematics. Applications span consumer electronics, robotics, automotive ECUs, industrial automation, sensors, and medical equipment. Firmware roles require strong understanding of electronics, timing constraints, and real-time programming. Global demand grows as industries adopt increasingly sophisticated embedded and connected hardware systems.