Senior Scientific Software Engineer (Fed Gov)

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Scientific Software Engineer (Fed Gov) based in the United States. In this role, you will contribute to the development, modernization, and maintenance of scientific software supporting critical computational modeling initiatives within a national laboratory environment. You will work with complex scientific applications, legacy codebases, and high-performance computing (HPC) systems to improve software reliability, performance, and long-term maintainability. Combining scientific programming expertise with systems engineering and software quality practices, you will help ensure that computational tools remain accurate, efficient, and dependable. You will collaborate with technical teams on Linux-based development, numerical modeling, and reproducible scientific workflows. This opportunity offers meaningful technical challenges in a regulated, mission-critical environment where precision, quality, and engineering excellence are essential.