Hiring a GCC cross-compiler developer is essential for creating software that runs on multiple platforms. They have the expertise to generate code for a different platform than the one the compiler runs on. This is crucial for embedded systems development, game consoles, or systems with specific hardware requirements. Their knowledge of GCC, a robust and widely-used compiler, ensures efficient code translation and optimization. They also bring skills in debugging and performance tuning, which can significantly enhance the quality and speed of your software, making your product more competitive and user-friendly.