Hiring an ARM Cortex developer is beneficial for embedded systems development due to their proficiency in this high-performance, low-cost processor. They can leverage its features, like low power consumption and enhanced debug capabilities, to create efficient, reliable systems. Their expertise can enable the development of advanced real-time applications, IoT devices, and system control applications. They can also optimize code for best performance, ensuring your product's functionality and longevity. Their knowledge of this specific architecture can provide a competitive edge in the market.