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Software Systems Engineer-Level 3/4 (AHT)

Northrop Grumman
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Northridge, Los Angeles, CA, USA
Sep 21, 2026
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’s Defense System's, Advanced Weapons Division is looking for a Software Systems Engineer-Level 3/4, located in Northridge, CA. This role will be 100% on-site with no hybrid opportunities.  A current government issued secret clearance is required to start.

This person will support the Stand in Attack Weapon (SiAW) Program. As a member of the Software team, you’ll work in a fast-paced environment as the go between for the Software Engineering functional group and the Systems Engineering functional group. Candidate should possess Systems Engineering discipline knowledge with strong embedded software familiarity. Candidate will be responsible for analyzing, allocating requirements and specifications with various stakeholders.  

Responsibilities: 

Responsible for translating system/subsystem level software requirements into software level requirements for each CSCI. Work with System and Software engineers to develop software architecture models. Support Verification and Validation of software product to ensure all integrated CSCIs function as intended. Experience in systems engineering including requirements analysis, requirements allocation, system design, software design, software implementation, software testing, system integration, field integration testing, and requirements verification. Experience in software/systems architecture using Cameo Enterprise Architecture (behavioral, structural, analytical) to develop use cases, activity diagrams and sequence diagrams. Familiarity in Writing Software Test Plans and Test Descriptions and running tests. 

Basic Qualifications Principal Software Systems Engineer (Level 3): 

  • Bachelor of Science in an Engineering discipline and a minimum of five (5) years of systems engineering experience with any exposure to requirements development and verification activities; or a Master’s of Science with a minimum of three (3) years of systems engineering experience with any exposure to requirements development and verification activities. 
  • Experience in systems engineering tools, such as DOORS, CAMEO. 
  • Experience in Embedded Software, and ability to read code and verify the implementation per Software Requirements Specifications 
  • Experience with system/subsystem/software/hardware integration, test, and verification 
  • Experience in the defense industry and design in an aerospace environment 
  • Current US Government Secret security clearance, adjudicated within the past 5 years 

Basic Qualifications Sr. Principal Software Systems Engineer (Level 4): 

  • Bachelor of Science in an Engineering discipline and a minimum of eight (8) years of systems engineering experience with any exposure to requirements development and verification activities; will consider Master of Science in an Engineering discipline and a minimum of six (6) years of systems engineering experience with any exposure to requirements development and verification activities. 
  • Experience in systems engineering tools, such as DOORS, CAMEO. 
  • Experience in Embedded Software, and ability to read code and verify the implementation per Software Requirements Specifications 
  • Experience with system/subsystem/software/hardware integration, test, and verification 
  • Experience in the defense industry and design in an aerospace environment 
  • Current US Government Secret security clearance, adjudicated within the past 5 years 

Preferred Qualifications: 

  • Experience in multiple aerospace and defense technologies (e.g., sensors, navigation aids, guidance electronics, controls, propulsion, structures, platforms). 
  • Have technical knowledge in one or more military mission areas (e.g., Air, Land, Sea, Space, Cyber) 
  • Experience in assessing legacy system architecture and innovation for future potential technology development. 
Primary Level Salary Range: $114,000.00 - $171,000.00Secondary Level Salary Range: $142,200.00 - $213,400.00The 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.

Job ID

R10242536

Security Clearance

SECRET
About Northrop Grumman

Northrop Grumman solves the toughest problems in space, aeronautics, defense and cyberspace to meet the ever-evolving needs of our customers worldwide. Our 90,000 employees are Defining Possible every day to create and deliver advanced systems, products and services. Northrop Grumman careers and internships are as varied as your interests, with a lifetime of potential that will allow you to work together with people from many backgrounds, personal passions and disciplines.

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