Senior Principal Software Systems Engineer

Northrop Grumman

Senior Principal Software Systems Engineer guiding technical execution for Northrop Grumman’s Sentinel program in Huntsville or Colorado Springs. Collaborating on systems challenges and model-based engineering.

Posted 6/10/2026full-timeHuntsville • Alabama, Colorado • 🇺🇸 United StatesSenior💰 $129,300 - $203,600 per yearWebsite

Tech Stack

Tools & technologies

Node.js

About the role

Key responsibilities & impact

Drive technical execution in support of major program events, collaborating within and across the Division SDS program portfolio to deliver exceptional customer value.
Focus on resolving high-level systems challenges, ensuring the execution of the overall technical plan within the Integrated Master Schedule.
Support strategic SDS Division initiatives on tools, processes, and cross-segment technical reviews, driving technical rigor into technical interchange meetings with C2 partners.
Utilize Model-Based Engineering to deliver a highly sustainable Weapon System, advising the C2 program office on program, schedule, and technical matters.
Perform requirements analysis, review and document source data for requirements, generate requirements verification, and work with suppliers and internal teams to ensure products designed meet requirements.
Interface with subject matter experts, analysts, architects, designers, system engineers and specialty engineers to capture Sentinel Node structure and behavior across UPDM/UAF/SysML/UML MBSE frameworks.
Support requirement decomposition, derivation, and traceability.
Support development of MBSE strategy and MBSE implementation.
Coordinate with sub-contracted product teams to drive compliance to the SOW and established program model governance.
Help develop technical content for presentations and present to internal and external stakeholders.
Apply the principles of engineering to design components and systems using applicable standards and specifications.
Maintain design documentation and follow configuration management requirements.

Requirements

What you’ll need

T04: 8 Years of experience with Bachelors; 6 Years with Masters; 4 Years with PhD or 04 additional years in lieu of a degree
Must have an active U.S. Government DoD Secret security clearance at time of application
Current understanding of software engineering best practices
8+ years of experience in software engineering, system design, software requirements, and test
Experience delivering SW products for IFC Certification
Ability to team plan, execute, and manage the technical scope
Experience with Agile and working in a cross-function Scrum team.
Experience with Software Safety (Mil-STD882E)
Experience performing Safety Critical Functional Thread Analysis (SCFTA)
Experience designing for Safety Critical Functions
Experience writing requirements for Safety Critical Functions
Experience with USAF Nuclear Surety (AFMAN91-119) and/or Cyber Certification
Experience integrating multiple engineering specialties and stakeholders across multiple Integrated Product Teams and Suppliers
Experience leading requirements, design, and integration of complex systems
08 years experience with Model-Based Systems Engineering (MBSE)
Experience leading the performance of technical tasks on schedule, at cost and achieving all requirements as technical lead
Able to create plans and standards for architecture, requirements, and design that can address selection process that accounts for providing safe, fault tolerant, and deterministic operation for critical functions.
Establish a Software Requirements Peer Review Process that includes identification of all artifacts required for peer review.
Able to create system, hardware and software verification plans to address complete functional validation as describe by the software requirements specification

Benefits

Comp & perks

Medical, Dental & Vision coverage
401k
Educational Assistance
Life Insurance
Employee Assistance Programs & Work/Life Solutions
Paid Time Off
Health & Wellness Resources
Employee Discounts

ATS Keywords

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Hard Skills & Tools

Model-Based Engineeringsoftware engineeringsystem designrequirements analysisAgileSafety Critical Functional Thread AnalysisSoftware SafetyModel-Based Systems Engineeringrequirements verificationdesign documentation

Soft Skills

collaborationtechnical executionteam planningcommunicationleadershipproblem-solvingtechnical rigorpresentation skillsstakeholder engagementcross-functional teamwork

Certifications

U.S. Government DoD Secret security clearanceAFMAN91-119Mil-STD882E