Sentinel - Interface Systems Engineer / Interfaces Principal Systems Engineer
Northrop Grumman · Huntsville, AL
$87,600–$163,200from the description
Jun 30, 2026
Huntsville, AL
Jul 21, 2026
What this job asks for AI summary
This role focuses on developing and maturing interface engineering artifacts — including Interface Control Documents, requirements and verification plans, logical and physical architectures, CAD models, and wiring diagrams — for a military ICBM weapon system program. Work is conducted within a Model-Based Systems Engineering environment using tools such as Cameo and DOORS. The position suits STEM-degreed engineers with an active DoD Secret clearance who are comfortable collaborating across large defense programs.
Mid level · 2+ years · Huntsville, AL · Bachelor's required · Secret clearance · Full-time
“or” means any one of them counts — you don't need all of them.
Posted 2 times — it's one opening, so apply once.
We read this from the posting text with AI. Skim the description below before ruling yourself out.
How this req sits in the market our data
Rare in this occupation — lead with these, and say what you built with them.
What the occupation pays Median $123,099 (middle half $94,422–$145,807). This posting is about at that midpoint.
Estimated from BLS employment for this occupation and area, per-skill prevalence across our listing corpus, and published wage benchmarks — as of Jul 28, 2026. It is a model, not a headcount.
Why we read it this way (8)
This posting covers two levels simultaneously: Systems Engineer Level 2 (2+ years, $87,600–$131,400) and Principal Systems Engineer Level 3 (5+ years, $108,800–$163,200). The extracted minimums reflect the lower Level 2 gate; the comp range spans both levels combined.
The role is primarily Systems Engineering — developing Interface Control Documents, interface architectures, wiring diagrams, and MBSE artifacts — which does not map cleanly to any single SOC code. 15-1299 (Computer Occupations, All Other) is used as the closest fit; 15-1211 (Computer Systems Analysts) is a reasonable runner-up given the systems analysis and requirements work.
Cameo (or similar MBSE tool) and DOORS (or similar requirements management tool) are listed under Basic Qualifications with explicit year minimums (1 year for Level 2, 2 years for Level 3); they are treated as hard gates.
Jira, Confluence, and NX CAD appear only under Preferred Qualifications.
An active DoD Secret clearance is required at time of application; the ability to obtain Top Secret and SAP access is also required but is not a clearance held at start — the Secret gate is the binding one for the clearance requirement.
STEM Bachelor's degree is required; a Master's or PhD can substitute for some years of experience but a degree itself is always required, so the degree requirement is set to Bachelors.
U.S. Citizenship is required due to the clearance requirement.
Requires a Secret clearance — the cleared population is a small fraction of this occupation, so the real candidate pool is materially smaller than the estimate below, which does not model clearance.
Read the full posting
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