Hiring an Intel MKL developer can significantly optimize your software performance. They have expertise in mathematical computing, which is crucial for high-performance applications such as machine learning, data analysis, and scientific computations. Their knowledge in Intel's Math Kernel Library (MKL) allows them to leverage highly optimized, threaded, and vectorized functions, reducing execution time and improving efficiency. They can handle complex computations, data analysis, and model training tasks, thereby increasing overall productivity. Their skills can be particularly useful for businesses dealing with large data sets and complex numerical computations.