Support NASA Missions! The Space Telescope Science Institute (STScI) is a multi-mission science and flight operations center for NASA’s flagship observatories. Our world-class astronomical research center is based on the Johns Hopkins University Homewood campus in Baltimore, Maryland. Visit our website to learn more about our missions. This position can support hybrid work. Candidates must reside in or be willing to relocate to our local market. (MD, DE, VA, PA, DC & WV). STScI has an immediate opening for a Senior Software Engineer in the SI Calibration Software Branch (SCSB) in the Data Management Division.  The SCSB is responsible for the development and operational mainten