An Intel Math Kernel Library (MKL) developer uses Intel's proprietary, highly optimized libraries to create software with superior performance. They focus on high-performance computing, cloud computing, and AI, utilizing MKL's mathematical routines for linear algebra, random number generation, and Fourier transform applications. Their work also involves optimizing code for the latest Intel processors, enhancing the speed and efficiency of mathematical computations, and developing algorithms that can benefit from parallel processing. They work closely with other developers, providing them with tools and libraries that can improve the performance of their software. They may also troubleshoot and resolve issues related to Intel MKL.