Seeking a Research Computing Software Engineer to develop and maintain software supporting research in classified environments and cloud HPC platforms. The role involves designing, coding, testing, and optimizing software systems to enhance research workflows, collaborating with engineers and researchers, and ensuring performance and integration with existing infrastructure. Located in State College, PA or Reston, VA, this on-site position requires a bachelor's degree and 3+ to 6+ years of experience, depending on seniority. Responsibilities include leading software projects, proposing new features, and providing technical support. Preferred qualifications include a TS/SCI clearance and a master's in Geography. The salary ranges from $97,100 to $164,000, with comprehensive benefits. Candidates must pass background checks, obtain security clearance, and be U.S. citizens. Remote work is not guaranteed.