Principal / Sr. Principal Software Engineer

Company: Northrop Grumman
Location: Woodland Hills
Posted on: April 1, 2026

Job Description:

RELOCATION ASSISTANCE: Relocation assistance may be available 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. Northrop Grumman Mission Systems is a trusted provider of mission-enabling solutions for global security. Our Engineering and Sciences (E&S) organization pushes the boundaries of innovation, redefines engineering capabilities, and drives advances in various sciences. Our team is chartered with providing the skills, innovative technologies to develop, design, produce and sustain optimized product lines across the sector while providing a decisive advantage to the warfighter. Come be a part of our mission! We are looking for you to join our team as a Principal/Senior Principal Software Engineer based out of Woodland Hills, CA. As a Principal/Senior Principal Software Engineer at Northrop Grumman you will have a challenging and rewarding opportunity to be a part of our Enterprise-wide digital transformation. Through the use of Model-based Engineering, DevSecOps and Agile practices we continue to evolve how we deliver critical national defense products and capabilities for the warfighter. Our success is grounded in our ability to embrace change, move quickly and continuously drive innovation. The successful candidate will be collaborative, open, transparent, and team-oriented with a focus on team empowerment & shared responsibility, flexibility, continuous learning, and a culture of automation. What You’ll get to Do: In this position you will be developing embedded software for our cutting-edge Navigation systems. As a member of our world-class software development team, you will have opportunities to improve and expand your capabilities in software design and code development. You will also have opportunities to perform software and system integration on state-of-the-art hardware, learn new software development techniques such as Model Based Engineering (MBE), and work in an agile and collaborative development environment. As a successful candidate, you will collaborate with peers across our organization and will have clearly demonstrated the strong leadership skills needed to join our top performing team. You will have a track record as an effective communicator and problem solver who is able to develop and maintain good working relationships with our internal and external customers. You will also have demonstrated a commitment to ethics and integrity, and the capability to innovate while challenging our traditional ways of doing business. You will make us even better! This requisition may be filled at either a Principal Level or Sr. Principal Level. BASIC REQUIREMENTS FOR A PRINCIPAL SOFTWARE ENGINEER: Bachelor’s degree in a STEM discipline with 5 years of hands-on Software Development experience; 3 years of experience with Masters; 0 Years with a PhD Demonstrated capability to translate formal software requirements into software designs Demonstrated use of high-level programming languages such as C, C++, or Java, or scripting languages such as Python Experience using software management and workflow automation tools such as ClearCase, Git, ClearQuest, or Jira Proven ability to design and code new software or modify existing software to add new features Ability to debug existing software and correct defects Experience with open software/system architecture solutions Experience integrating hardware and software in a lab environment Demonstrated ability to work in a collaborative development environment Ability to work on site at our Woodland Hills, CA facility Experience in the development and performance of software tests US Citizenship is required to obtain and maintain security clearance BASIC REQUIREMENTS FOR A SR. PRINCIPAL SOFTWARE ENGINEER: Bachelor’s degree in a STEM discipline with 9 years of hands-on Software Development experience; 7 years of experience with Masters; 4 Years with a PhD Demonstrated capability to translate formal software requirements into software designs Demonstrated use of high-level programming languages such as C, C++, or Java, or scripting languages such as Python Experience using software management and workflow automation tools such as ClearCase, Git, ClearQuest, or Jira Proven ability to design and code new software or modify existing software to add new features Experience integrating hardware and software in a lab environment Ability to debug existing software and correct defects Experience with open software/system architecture solutions Demonstrated ability to work in a collaborative development environment Willingness and ability to work on site at our Woodland Hills, CA facility Experience in the development and performance of software tests US Citizenship is required to obtain and maintain security clearance Preferred Qualifications: Real-time safety-critical embedded software systems development experience (including APIs, interfaces and device drivers) Navigation System development experience Demonstrated capability to develop UML software designs using design tools such as Rhapsody and/or Model Based Engineering designs using tools such as Simulink or SCADE Experience with the full software lifecycle: specification, design, implementation and unit test, integration, and maintenance Experience developing, verifying, certifying and releasing mission and safety-critical software systems that comply with RTCA DO-178B/ C or similar guidelines. Experience with software test tools such as VectorCAST and code analysis tools such as Polyspace Hands-on experience with one or more communication protocols such as MIL-STD-1553, ARINC-429 or RS-422 Skilled in writing both automated and manual test procedures to validate system functionality Background in software integration, and testing processes Experience supporting test investigations and debugging efforts Primary Level Salary Range: $110,300.00 - $165,500.00 Secondary Level Salary Range: $137,400.00 - $206,000.00 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. 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.

Keywords: Northrop Grumman, Simi Valley , Principal / Sr. Principal Software Engineer, IT / Software / Systems , Woodland Hills, California