Research Support Instruments (RSI), located just outside of DC in Lanham, MD, is seeking a senior-level Engineer/Scientist with skills in optical testing, optical system analysis, stray-light analysis and radiometry for application on space flight hardware. This position will be supporting NASA Goddard Space Flight Center (GSFC) and Naval Research Laboratories (NRL) programs performing systems concept development, design, analyses, hardware development, integration and test, operations, and data analysis.