SAIC is a FORTUNE 500 scientific, engineering, and technology applications company that uses its deep domain knowledge to solve problems of vital importance to the nation and the world, in national security, energy and the environment, critical infrastructure, and health. The company’s approximately 44,000 employees serve customers in the Department of Defense, the intelligence community, the U.S. Department of Homeland Security, other U.S. Government civil agencies and selected commercial markets. SAIC had annual revenues of $8.9 billion for its fiscal year ended January 31, 2008. For more information, visit its Web site. SAIC: From Science to Solutions Job Description: To support the Global Modeling and Assimilation Office (GMAO) at the NASA Goddard Space Flight Center. Candidate will participate in an ongoing project to assess and improve the impact of observations in the GMAO atmospheric data assimilation system (ADAS). Duties will include setting up and running experiments with the ADAS, applying diagnostic tools including adjoint models to measure observation impact on analyses and forecasts, and analyzing results. Candidate will also develop and code new capabilities to compare impacts of various conventional and satellite observing systems used by the ADAS and perform evaluation and tests of the system. Education: Requires a Ph.D. or M.S. in Atmospheric Sciences, Physical Sciences or Mathematics. Bachelor’s Degree and experience may substitute for advanced degree. Required Skills: Strong computational background and experience with large-scale computations and in code and script development in FORTRAN 90 and UNIX is required. Experience executing experimental runs in a high-performance computing environment is required. Solid background and previous hands-on experience in modeling and/or data assimilation. Desired Skills: Experience/understanding of adjoint methods; experience with CVS. To Apply: Vist our website at www.saic.com/careers click on "Find Your Job" and enter 102561 in the req ID Field. SAIC is an Equal Opportunity Employer.