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Salary
$93k – $140k per year
Location
In office (Oklahoma City)
Seniority
Principal · 8+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 24, 2026. First seen by Alion on Aug 19, 2026. Northrop Grumman scores B on the Alion truth index.

Overview
Company
Impact
Profile match
Northrop Grumman is an American defence contractor whose oldest predecessor was founded in 1939, and which took its present form through the 1994 combination of Northrop and Grumman. It builds strategic systems including the B-21 Raider bomber and the Sentinel intercontinental ballistic missile programme, military and civil space systems, radars and electronic warfare equipment, autonomous aircraft, and mission systems and software for the United States armed forces and allied governments. Headquartered in Falls Church, Virginia and listed on the New York Stock Exchange, it earns the large majority of its revenue from the American government and employs close to one hundred thousand people.
RELOCATION ASSISTANCE: Relocation assistance may be availableCLEARANCE REQUIRED FOR START: YesCLEARANCE TYPE: SecretTRAVEL: Yes, 10% of the Time

Description

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.

Northrop Grumman Aeronautics Systems has an opening for aPrincipal Simulation Software Engineer / Sr. Principal Simulation Software Engineer - to join our team of qualified, diverse individuals within our Software organization in Oklahoma City, Oklahoma.

Accomplish:

In this role you will design, develop, integrate and test software for our end-user customers and businesses. Specifically, you will be responsible for the design, architecture, application development, and flight simulation. You will work with multi-disciplinary teams, such as with Systems Engineering, Cloud & Application, Test Automation, DevSecOps and Systems Test, in an Agile software development environment. Our simulation software is critical to the current and future company projects. You will analyze system capabilities to resolve problems on program intent, output requirements, input data acquisition, programming techniques and controls.

Essential Functions:

  • Work in an innovative environment, on significantly diverse assignments, and in collaborative team settings across all levels
  • Participate in the full software development life cycle including requirements, design, implementation, qualification, and delivery of software products to our customers
  • Architect and develop embedded mission systems software applications on a real time operating system
  • Be a part of Agile Scrum teams to develop software products for multiple software baselines

This requisition may be filled at either a Principal Software Engineer level 3 or a Sr. Principal Software Engineer level 4

Basic Qualifications for a Principal Software Engineer (level 3):

  • Bachelor’s Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline and 5 years of related engineering experience; OR a Master’s degree in a STEM discipline and 3 years of related engineering experience; OR a PhD in a STEM discipline and 1 years of related engineering experience.
  • Experience with the full Software Development Life Cycle (SDLC) - software design requirements, application development, integration, testing, and deployment
  • Experience with at least one of the following programming or scripting languages: C, C++, and Python
  • Experience with two or more of the following tools: Jira, Crucible, Bitbucket, Subversion, Bamboo, Jenkins, Gitlab, Sonarqube, Fortify, or Coverity
  • Must have an active U.S. Government Secret or higher clearance.
  • Must have the ability to obtain and maintain Special Access Program (SAP) clearance prior to the commencement of employment.

Basic Qualifications for a Sr. Principal Software Engineer (level 4):

  • Bachelor’s Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline and 8 years of related engineering experience; OR a Master’s degree in a STEM discipline and 6 years of related engineering experience; OR a PhD in a STEM discipline and 4 years of related engineering experience.
  • Experience with the full Software Development Life Cycle (SDLC) - software design requirements, application development, integration, testing, and deployment
  • Experience with at least one of the following programming or scripting languages: C, C++, and Python
  • Experience with two or more of the following tools: Jira, Crucible, Bitbucket, Subversion, Bamboo, Jenkins, Gitlab, Sonarqube, Fortify, or Coverity
  • Must have an active U.S. Government Secret or higher clearance.
  • Must have the ability to obtain and maintain Special Access Program (SAP) clearance prior to the commencement of employment.

Preferred Qualifications for level 3 and level 4:

  • Strong understanding of C and C++ languages including templates, memory storage, and compiler/linker
  • Experience with or knowledge of Joint Simulation Environment (JSE), Distributed Interactive Simulation (DIS), or High-Level Architecture (HLA)
  • Experience with Full-Motion Flight Training Systems
  • Experience with simulated threat environments such as AFSIM or NGTS
  • Experience with Infrastructure as Code & configuration management
  • Experience with Continuous Integration/Continuous Deployment concepts and tools such as Gitlab, Bamboo, or Jenkins
  • Ability to collaborate with systems engineers, hardware designers and integration/test engineers to develop and maintain complex software systems
  • Excellent communication, interpersonal skills, and the ability to interface with all levels of employees and management
    Primary Level Salary Range: $93,300.00 - $139,900.00Secondary Level Salary Range: $116,300.00 - $174,500.00The 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.The application period for the job is estimated to be 20 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates.Northrop Grumman is an Equal Opportunity Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO and pay transparency statement, please visit http://www.northropgrumman.com/EEO. U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.
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