Enable scaling of simulation and optimization software on HPC systems through the design and development of efficient parallel algorithms. Leverage software design to improve efficiency of modeling and simulation workflows. Improve simulation performance via code optimization at the core, node, and system level. Develop tools that allow for benchmarking and testing of modeling and simulation software. Bachelor's degree in a STEM discipline with 2+ years of relative experience; master's degree in a STEM discipline with 0+ years of relative experience. Experience with collaborative software development including code optimization, debugging, testing and CI/CD. Some experience developing code on HPC systems within Linux environment. Proficiency in writing code in C++ (preferred) and Python. US Citizenship and the ability to obtain and maintain a clearance per business requirements. Master's in computer science, computer engineering, mathematics, or a relevant STEM related field plus 2 years of relevant experience. Experience with running, profiling, and benchmarking software on HPC systems. Experience with hardware-aware code optimization for HPC systems. Experience with developing parallel code (MPI, OpenMP) or GPU programming (CUDA). Active security clearance.