Senior Software Developer (TS/SCI) - Python, ETL & Data

Cornerstone Defense in Herndon, VA is seeking a Software Developer to translate requirements into concrete software solutions. You will design components, mentor teammates, and participate in end-to-end SDLC, including CI/CD integration, in an on-site role requiring Active TS/SCI w/ Polygraph. Ideal candidates will have 3+ years of Python experience, strong ETL and SQL skills, and demonstrated SDLC expertise to debug, test, and deploy across environments.