A Fortran Scientific Computing Developer uses the Fortran programming language, known for numerical and scientific computing, to solve complex scientific and engineering problems. They develop, test, and maintain software applications, often creating mathematical models and simulations. They work with large datasets, optimizing algorithms and ensuring accuracy and efficiency in computations. They may also integrate Fortran programs with other languages and technologies, and contribute to the development of scientific software packages. Their work is crucial in fields like meteorology, physics, and engineering where high-performance computing is required.