Northrop Grumman
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Northrop Grumman is showing multiple **onsite U.S. Sentinel** openings for **Principal / Sr. Principal Systems Test Engineer** roles. Based on the job titles alone, a QA candidate should expect **systems-level verification/validation work**, likely in a **large, structured, mission-critical environment** with strong emphasis on test planning, requirements traceability, and cross-functional coordination. The repeated,
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