Northrop Grumman
Sr Principal Software Engineer
- Location
- Oklahoma City, OK
- Work type
- On-site
- Job type
- Full-time
- Salary
- $116.3K – $174.5K / yr
- Clearance
- Secret
- U.S. citizenship
- Not stated
- Posted
- Jun 12, 2026
About the role
RELOCATION ASSISTANCE: Relocation assistance may be available
CLEARANCE REQUIRED FOR START: Yes
CLEARANCE TYPE: Secret
TRAVEL: Yes, 10% of the Time
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.
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.
CLEARANCE REQUIRED FOR START: Yes
CLEARANCE TYPE: Secret
TRAVEL: 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.Please note that this opportunity is contingent on program funding. Start dates are determined after funding confirmation.
Northrop Grumman is seeking an experienced Sr Principal Software Engineer to join our dynamic team. This position will support our Aeronautics Systems sector in Oklahoma City, OK.
The selected candidate will join our team of software engineers to:
- Support the development of Strategic Operating Units, executing both sustainment and modernization programs
- Contribute to software engineering initiatives for several programs with software design & development, software test and integration, and DevOps expertise
- Use a variety of software languages, technologies, and industry best practices
- Support all phases of the development life cycle for flight, mission, lab and tools software
Basic Qualifications:
- Bachelor’s degree in a Science, Technology, Engineering, or Mathematics (STEM) discipline from an accredited university and 8 years of experience in software engineering OR a Master’s degree in a (STEM) discipline from an accredited university and 6 years of experience in software engineering OR a PhD degree in a (STEM) discipline from an accredited university and 4-years of experience
- Familiar with Safety-Critical Embedded Real Time Software
- Familiar with all phases of the software development life cycle and Agile framework as a Product Owner, SCRUM Master, and/or team member
- Experience with developing software and scripts on various programming languages: C, C++, Python, PowerShell, VBScript, Bash, AND/OR KornShell for Safety-Critical applications/Systems
- Familiar with Architecting, Designing, Implementing, Integrating, Verifying and Qualifying Safety-Critical Embedded Real Time Software running on various RTOS (VxWorks, Integrity, Real Time Embedded Linux)
- Familiar with Static & Dynamic Code Analysis Tools and Fuzzing Tools such as: Coverity, Fortify, AND/OR SonarQube
- Familiar with Software Change Control, Change Management, and CI/CD tools
- Your ability to obtain and/or transfer and maintain the final U.S. adjudicated government Secret clearance and any program access(es) required for the position within a reasonable period of time, as determined by the Company
Preferred Qualifications:
- Bachelor of Science in Computer Science, Software Engineering, Electrical Engineering, or Computer Engineering
- Active U.S. government Secret clearance
- Demonstrated leadership, teamwork capabilities, excellent oral and written communication skills, and strong interpersonal communication skills at all levels of employees and management
- Experience with Agile Software Development, object-oriented architectures, designs, programming, debugging, and hardware-software integration and testing
- Experience with Software Change Control, Change Management, Code Quality, Static Analysis, and CI/CD tools such as: Atlassian tool suite, Jira, GitHub, GitLab, SonarQube, Coverity, AND/OR Jenkins
- Experience architecting, Designing, Modeling (Rhapsody or Cameo), Implementing, Maintaining, integrating, and Debugging OO C++ software running on Real-Time Operating systems such as: VxWorks, Integrity, AND/OR Real Time Embedded Linux
- Experience with DOORs AND Software Requirement Specification Testing using Simulators, automated scripting languages such as Python, MATLAB, JavaScript, AND/OR Bash
- Experience with Static & Dynamic Code Analysis Tools and Fuzzing Tools such as: Coverity, Fortify, AND/OR SonarQube
- Experience with software network interfaces -and troubleshooting networks (TCP/IP, UDP, LAN, VLAN, SNMP or others)
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.
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.