Systems Engineer - Level 3 or 4 (AHT)

AdaMarie; Huntsville (AL); On-site; USD 109,000 - 204,000; Full time

Benefits offered by this job

Relocation assistance may be available

Job summary

Northrop Grumman is seeking a Principal/Senior Principal Systems Engineer to join our Huntsville, AL team. The role emphasizes MBSE, SysML, requirements development, and verification tracking within a DoD context.

Must be able to obtain a Secret clearance and travel up to 10%. Responsibilities include leading system engineering efforts, decomposing requirements, and publishing change notices for system specifications.

Qualifications

• Bachelor’s degree in a STEM field from an accredited university.
• Master’s degree in STEM preferred; PhD beneficial for senior level.
• Active DoD context with MBSE and system modeling experience.
• Strong background in architecture development and requirements allocation.
• Experience with Cameo and DOORS for requirements decomposition.
• Ability to travel up to 10% and obtain a Secret clearance.

Responsibilities

• Perform MBSE functional and behavior analysis for a software/hardware system.
• Develop system-of-systems requirements via trade studies and analysis.
• Publish change notices and update requirement databases and interfaces.
• Document analysis results in reports and briefings for stakeholders.
• Create and present briefings within the team and to external stakeholders.
• Lead system engineering in requirements, models, and verification tracking.
• Track changes to system requirements and verification activities.
• Decompose hardware and software requirements from PIDS.

Skills

MBSE

SysML

Requirements decomposition

Architecture development

Travel up to 10%

Education

Bachelor’s Degree in STEM

Master’s Degree in STEM

PhD in STEM (preferred)

Tools

Cameo

DOORS

SysML modeling tools

Job description

Search jobs 20,721 Explore companies 50 Systems Engineer - Level 3 or 4 (AHT) Northrop Grumman Aerospace Systems Software Engineering Huntsville, AL, USA USD 108,800-203,600 / year Posted on Aug 30, 2026 RELOCATION ASSISTANCE: Relocation assistance may be available CLEARANCE REQUIRED FOR START: Yes CLEARANCE TYPE: Secret TRAVEL: Yes, 10% of the Time

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 Space Systems, Multi-Domain Operations, and Missile Defense Integration Business Unit (BU) has an exciting career opportunity for a Principal / Sr. Principal Systems Engineer – Level 3 or 4 to join our team of qualified, diverse individuals. This position will be in Huntsville, AL

What You Will Get To Do:

• Perform model-based systems engineering (MBSE) functional and behavior analysis for a software and hardware integrated system.
• Participate in a MBSE environment to develop system-of-systems requirements via system/component trade studies and analysis.
• Contributes to publishing change notices to system specification and update of requirements databases, architectural models, interface definitions, and trace system and Element level requirements.
• Document analysis results in reports and briefings for critique and review by internal and external stakeholders.
• Create and present briefings within the team and external stakeholders.
• Duties will include leading system engineering in the development of requirements, model, and tracking status of verification.
• Perform detailed tracking of changes to system requirements and verification
• Decompose hardware and software requirements from the Prime item design specification (PIDS).

The selected candidate should thrive in a fast-paced work environment with high expectations, significantly diverse assignments, and collaborative/team settings across all levels.

This requisition may be filled at a higher grade based on qualifications listed below. This requisition may be filled at either a Principal Systems Engineer – Level 3 or a Sr. Principal Systems Engineer – Level 4.

Basic Qualifications:

• Basic Qualifications for Principal Systems Engineer – Leve 3: Bachelor’s Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline from an accredited university and 5 years of related work experience, or a Master’s Degree in STEM and 3 years of related work experience, or 1 year of related work experience with a PhD in STEM.
• Basic Qualifications for Sr. Principal Systems Engineer – Level 4: Bachelor’s Degree in a STEM (Science, Technology, Engineering or Mathematics) discipline from an accredited university and 8 years of related work experience, or a Master’s Degree in STEM and 6 years of related work experience, or 4 years of related work experience with a PhD in STEM.
• Strong prior experience with use of MSOSA (Cameo) and DOORS (Requirements decomposition).
• Applicants must demonstrate a strong technical background in architecture development, functional decomposition, requirements development and allocation, and interface definition with system-modeling tools.
• Applicants must have a strong background in MBSE (Model Based Systems Engineering) and the use of SysML to describe behaviors of a complex DoD system.
• Capable of working both independently and within a small team environment.
• Ability and willingness to travel up to 10% of the time to support business needs.
• Applicants must have a current active in-scope U.S. Government issued Secret security clearance at the time of application which is required to start.

Preferred Qualifications:

• Demonstrated experience modeling or simulating missile defense applications or similar domains (air combat, air defense, intercept of ballistic targets, intercept of non-ballistic targets, space vehicles, sub-orbital mechanics, etc.).
• Systems modeling and analysis experience in aspects of the missile defense system (e.g., Aegis Weapons Systems, Ground-based Midcourse Defense (GMD), Glide Phase Intercept (GPI), Hypersonic and Ballistic Tracking Space Sensor (HBTSS), Fire Control, C2BMC, MDS sensors (EO/IR/RF), kill vehicles, interceptors, countermeasures, etc.).
• Experience analyzing electrical schematics, electrical interface control documents, and reading circuit diagrams, Field Programable Gate Array (FPGA) logic or logic gate diagrams.
• Systems engineering experience with large, complex systems.

Primary Level Salary Range: $108,800.00 - $163,200.00

Secondary Level Salary Range: $135,800.00 - $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.

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.