Sentinel Principal Software Engineer

Job Details

Relocation assistance may be available. Clearance type:
Secret. Travel:
Yes, 10% of the time.

Northrop Grumman is looking for a Principal Software Engineer for the Sentinel program. This position will be located in Manhattan Beach, California or Colorado Springs, CO.

At Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people’s lives around the world today—and for generations to come. Our pioneering spirit has enabled us to be at the forefront of many technological advancements in the nation’s history. We look for people who have bold ideas, courage, and a pioneering spirit to join forces to invent the future—and have fun along the way.

• Design and define system architecture for new or existing complex computer systems
• Determine system specifications, input/output processes, and working parameters for hardware/software compatibility and maintenance of system security
• Coordinate design of subsystems and integration of the total system
• Identify, analyze, and adjudicate software deficiencies
• Perform integration testing, regression testing, and formal qualification testing in an agile software development environment
• Work with the lead test engineer and a team of software developers to establish and develop test methods and techniques
• Design, develop, and maintain software test plans, software test cases, software test procedures, and automated software test in compliance with program functional, technical, and performance requirements
• Generate software test data, perform test data analysis, and develop test documentation
• Participate in formal testing events, customer meetings, and software design reviews

• Medical, dental, and vision coverage
• 401k
• Educational assistance
• Life insurance
• Employee assistance programs & work/life solutions
• Paid time off
• Health & wellness resources
• Employee discounts

Standard work schedule is 9/80: employees work a nine‑hour day Monday through Thursday to take every other Friday off. This role may offer a competitive relocation assistance package.

• Principal Software Engineer: 5 years with a bachelor’s degree in related field, 3 years with a master’s, 1 year with a PhD or 4 additional years in lieu of a degree
• U.S. Citizenship with an active DoD Secret clearance with a reinvestigation date within the last six years
• Ability to obtain Special Program Access (SAP)
• Ability to plan, execute, and manage the technical scope and support leadership planning
• Experience with Agile and working in a cross‑function Scrum team
• Working knowledge of object‑oriented analysis and design principles
• Familiarity with full‑stack application development, including API design
• Experience developing database design
• Experience programming in scripting languages (Python, JavaScript)
• Familiarity with model‑based systems engineering languages (SysML/UML) and concepts
• Experience with UI design and development, or interpreting complex algorithms and requirements for implementation

• Bachelor’s degree or higher in STEM
• Experience with the Atlassian Tool Suite, including Jira and Confluence
• Proficient with DOORS, Cameo, and the ability to write and decompose system requirements
• Ability to evaluate risks and tradeoffs and present solution options to management
• Experience as a Scrum Master or Product Owner within an Agile development process
• Experience using Atlassian tools to track agile backlog
• Experience generating and delivering documents (CDRLs) for government use
• Experience designing software using UML in Cameo
• Understanding of MBSE modeling tools, such as Cameo or a similar product
• Experience performing trade studies of COTS products for use in the delivered system
• Experience using DOORS to document software requirements

$ – $ (general guideline; final offers consider experience, education, skills, and market conditions).

Eligible for overtime, shift differential, discretionary bonus, and, for VP or Director positions, long‑term incentives.

Estimated 20 days from posting, subject to change.

Northrop Grumman is an Equal Opportunity Employer. For our complete EEO and pay transparency statement, visit  U.S. citizenship is required for all positions with government clearance.