Sentinel - Principal / Sr Principal Systems Engineer - 18975 at Northrop Grumman
Roy, UT
$98,400–$184,200from the description
Jul 11, 2026
Roy, UT
Jul 21, 2026
What this job asks for AI summary
This role centers on building and refining Operating and Support cost models for a large defense program, using frameworks such as the DoD CAPE methodology to inform affordable system design across its lifecycle. The work involves cost-versus-requirement trade analysis, reliability and maintainability modeling, and supporting major program design reviews. It suits engineers with a background in cost estimating tools, lifecycle cost analysis, and ideally some maintenance or logistics experience.
Senior level · 5+ years · Ogden-Clearfield, UT · Bachelor's required · Secret clearance · Full-time
Advertised as Principal, but the requirements read as Senior.
“or” means any one of them counts — you don't need all of them.
Posted 3 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.
Why we read it this way (12)
This role is a dual-level posting covering Principal Systems Engineer (T-03, 5+ years with a Bachelor's) and Sr. Principal Systems Engineer (T-04, 8+ years with a Bachelor's). The salary ranges are stacked: $98,400–$147,600 for T-03 and $122,800–$184,200 for T-04. Both ranges are reported together in the bottom of the pay band/max.
The primary occupation is systems engineering focused on cost/RAM-C modeling (CAIV, RvC, O&S, LCC) for a DoD program — not a standard software development or data science role. SOC 15-1299 is used as the closest available code; 15-2031 (Operations Research Analysts) is a strong runner-up given the modeling, simulation, and analysis emphasis.
An active Secret clearance is required at time of application; Top Secret is listed under Preferred Qualifications only.
The ability to obtain Special Access Program (SAP) approval is also required but is not a standard clearance tier — noted here as it is an additional access gate beyond the Secret clearance.
ACEIT, SEER, and ReliaSoft are listed as interchangeable cost estimating tools under a single required bullet; they are captured as one skill with alternatives.
SQL, Azure, and Power BI are listed together as interchangeable data-handling scripting tools under Preferred Qualifications with 1 year of experience; captured as one preferred skill with alternatives.
Python, C++/C#, MATLAB, and VBA are listed together as interchangeable engineering scripting tools under Preferred Qualifications; captured as one preferred skill with alternatives.
Jira and Confluence are listed together as the Atlassian Tool Suite under Preferred Qualifications; captured as one preferred skill with alternatives.
INCOSE certifications and knowledge of DoD CAPE guide / Title 10 / DoDI 5000.73 appear under Preferred Qualifications but name no specific technology or tool, so they are omitted from the skills list per extraction rules.
The role is located in Roy, Utah, which falls within the Ogden-Clearfield, UT CBSA.
Ignored 1 non-technology phrase(s) as skills (responsibilities/concepts, not named tools): cost modeling.
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.
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