Principal/Sr Principal C++ Software Engineer (*active TS/SCI required) - R10189998-2 Join Northrop Grumman as a Principal/Sr Principal C++ Software Engineer supporting Ground Systems within the Space Systems Sector. This role requires an active TS/SCI clearance and involves designing, developing, testing, and debugging applications for a Ground Segment supporting national security programs. Location: Morrisville, NC, or Fairfax, VA (onsite only). Compensation varies by location. Key Responsibilities: Design, develop, and maintain software for command and control systems. Operate within an Agile environment using Atlassian tools. Collaborate with a team to support mission milestones and ensure system reliability. Basic Qualifications: Active TS/SCI clearance; ability to pass polygraph. Relevant experience depending on the level (3 or 4) with a degree or equivalent experience. Proficiency in C++, Python, and RedHat Linux. Experience with the software development lifecycle and Agile methodologies. Preferred Qualifications: Favorable polygraph adjudication. Experience with CI/CD pipelines and automated testing. Knowledge of Command and Control systems. We offer a 9/80 work schedule and a comprehensive benefits package. Salary ranges from $100,300 to $206,000, depending on experience and location. Northrop Grumman is an Equal Opportunity Employer. U.S. Citizenship is required. #J-18808-Ljbffr Northrop Grumman