Principal Systems Architect Engineer – MBSE, Cameo

Northrop Grumman

Principal Systems Architect Engineer responsible for functional requirements and system engineering at Northrop Grumman. Working on cutting-edge technologies in aerospace and defense systems.

Posted 6/18/2026full-timeEl Segundo • California • 🇺🇸 United StatesLead💰 $114,000 - $171,000 per yearWebsite

Tech Stack

Tools & technologies

AnsibleAWSAzureCloudGoogle Cloud PlatformTerraform

About the role

Key responsibilities & impact

Functional-requirements development – Elicit, document, and prioritize system functional requirements.
System-engineering decomposition – Translate functional requirements into hardware and software architectures; define clear interfaces.
Cameo Systems Modeler production – Build Activity, Internal Block Diagram (IBD), and Block Definition Diagram (BDD) models; maintain model traceability and version control.
Cyber-architecture support – Apply JSIG/NIST guidance to map cyber requirements onto system designs.
Zero-Trust & IAM concepts – Contribute to Zero-Trust network and RBAC/IAM design documentation.
Cloud-integration assistance – Support Azure (and optionally AWS/GCP) architecture teams with model-based representations of cloud services.
Automation & IaC – Write lightweight Ansible/Terraform scripts or PowerShell modules to provision test environments referenced in models.
CI/CD pipeline participation – Integrate model validation steps into build pipelines (e.g., model-to-code generation, automated consistency checks).
Integration-test planning – Draft test plans, execute data-flow verification, and support real-time command validation.
Documentation & Review – Produce architecture briefs, interface control documents (ICDs), and conduct peer reviews.
Mentorship – Provide guidance to junior engineers on MBSE practices and Cameo tool usage.

Requirements

What you’ll need

Must have a Bachelors degree in a STEM field and at least 5 years of relevant military / professional experience, OR a Master's Degree in a STEM field and at least 3 years of relevant military / professional experience, OR a PhD and at least 1 year of relevant military / professional / academic experience
Must have an active US Government Secret or higher clearance (with a background investigation completed within the last 6 years or currently enrolled into Continuous Evaluation)
Must have the ability to obtain and maintain Special Access Program (SAP) approval within a reasonable period of time, as determined by the company to meet its business needs
Must have experience developing Activity, IBD, and BDD models; experience with model libraries and traceability
Must have experience with cross-domain solutions, multi-level security (IL-4/5/6), and government-furnished hardware/software (GFX/GFE)
Must have experience with NIST, JSIG, and US Government cyber-risk frameworks

Benefits

Comp & perks

Health insurance coverage
Life and disability insurance
Savings plan
Company paid holidays
Paid time off (PTO) for vacation and/or personal business

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

functional requirements developmentsystem engineering decompositionCameo Systems ModelerActivity DiagramInternal Block DiagramBlock Definition DiagramAnsibleTerraformPowerShellCI/CD pipeline

Soft Skills

mentorshipdocumentationpeer review

Certifications

US Government Secret clearanceSpecial Access Program approval