Sentinel Principal / Sr Principal Software Engineer - 16877*

• Python proficiency - writing clean, testable code; familiarity with virtual environments, packaging, and type hints
• Real-time operating systems (RTOS) or bare-metal development basics
• Hardware description/validation tools - Oscilloscopes, logic analyzers, multimeters, power supplies, test rigs
• Version control - Git (branching, sub-modules, pull-request workflow)
• Using communication protocols (Modbus, MQTT, OPC?UA) to bridge software services and devices

Testing & Validation

• Unit/Component testing - pytest, unittest, hypothesis for pure-Python modules
• Hardware-in-the-loop (HIL) testing - automated scripts that program devices, run stimulus, capture response, and assert results
• System-level testing - Robot Framework, TestStand, or custom Python harnesses that coordinate multiple subsystems

DevOps & Deployment

• Containerizing test environments (Docker) for simulation and host-side tools
• Managing artifact repositories for firmware binaries (Artifactory, Nexus)

Methodologies

• Agile/Scrum or Kanban for cross-functional teams, * Assist in the design, development, and implementation of testing methods and equipment.
• Test planning, execution, reporting, and integration support.
• Prepare detailed test reports and support formal verification of the system.
• Compile data and define changes required in test equipment, test procedures, or new test requirements.
• Perform data analysis against requirements and interfaces for each software build or hardware component.
• Interface with software developers and systems engineers in support of verification.
• Product integration, regression, and verification testing including checkout in software test labs.
• Understanding of the software development lifecycle and agile development methodology, RVAM skills/experience

• Strong analytical debugging - ability to trace issues from software logs down to signal integrity on a PCB
• Clear communication with Software Engineers
• Documentation discipline -test procedures, and release notes, * T03- Bachelors in Science with 5 years of experience, Masters in Science with 3 years of experience, PhD with 1 years of experience or 04 additional years in lieu of a degree.
• T04 Sr. Principal Software Test Engineer- Bachelors in Science with 8 years of experience, Masters in Science with 6 years of experience, PhD with 4 years of experience or 04 additional years in lieu of a degree.
• Must have an active U.S. Government DoD Secret security clearance at time of application, current and within scope, with an ability to obtain and maintain Special Access Program (SAP) approval within a reasonable period of time, as determined by the company to meet its business need
• Experience with Agile and working in a cross-function Scrum team.

Experience with IBM Rational tool suite (DOORS and Jazz)

• Experience using software test automation tools/frameworks
• Experience with code analysis tools
• Experience developing ICDs and defining interfaces in an MBSE environment
• Familiarity with CSSAM / RVAM Governance

Preferred Qualifications:

Responsible for development and execution of automated and manual test cases to verify functional software requirements.

As a full-time employee of Northrop Grumman, you are eligible for our robust benefits package including:

• Medical, Dental & Vision coverage
• 401k
• Educational Assistance
• Life Insurance
• Employee Assistance Programs & Work/Life Solutions
• Paid Time Off
• Health & Wellness Resources
• Employee Discounts

This positions standard work schedule is a 9/80. The 9/80 schedule allows employees who work a nine-hour day Monday through Thursday to take every other Friday off. This role may offer a competitive relocation assistance package., Primary Level Salary Range: $98,400.00 - $163,200.00

Secondary Level Salary Range: $122,800.00 - $203,600.00

The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate's experience, education, skills and current market conditions.

Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay. Annual bonuses are designed to reward individual contributions as well as allow employees to share in company results. Employees in Vice President or Director positions may be eligible for Long Term Incentives. In addition, Northrop Grumman provides a variety of benefits including health insurance coverage, life and disability insurance, savings plan, Company paid holidays and paid time off (PTO) for vacation and/or personal business.

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 and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon. We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work - and we have an insatiable drive to do what others think is impossible. Our employees are not only part of history, they're making history.