> Markdown version of [/jobs/ext/1706573-sentinel-principal-sr-principal-systems-engineer-18975](https://www.wearedevelopers.com/jobs/ext/1706573-sentinel-principal-sr-principal-systems-engineer-18975). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sentinel - Principal / Sr Principal Systems Engineer - 18975 - **Company:** Northrop Grumman - **Location:** Roy, UT, United States - **Experience:** Expert - **Salary:** $98,400.0 - $147,600.0 - **Contract:** Permanent contract - **Skills:** Agile Methodology, Systems Engineering, Confluence, JIRA, Microsoft Azure, Big Data, C Sharp (Programming Language), C++ (Programming Language), Programming Tools, Python (Programming Language), MATLAB, Microsoft Office, Power BI, SAP (Applications), Scaled Agile Framework, SQL Databases, Systems Integration, Data Processing, Scripting, Vba Programming Language, Atlassian Tools - **Published:** July 12, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9025816/sentinel-principal-sr-principal-systems-engineer-18975 ## About the Role The selected candidate will join a team modeling high level Reliability, Availability, Maintainability, Cost (RAM-C) processes across multiple campuses. This role will focus Operating and Support (O&S) modeling to support affordable system design over its lifespan. O&S Model uses DoD Cost Assessment and Program Evaluation (CAPE) framework combining a variety of data sources. This role will support Requirement vs Cost (RvC) and Cost as an Independent Variable (CAIV) analysis for design reviews and major program events. This position may also include other product support related modeling efforts to include Availability, Reliability Centered Maintenance (RCM), and Life Cycle Cost (LCC). * Modeling large systems and experience finding useful data and trends in large data sets * A candidate with maintenance or logistical background will be able to more easily communicate with stakeholders * Position will be working to mature a model and must be comfortable with pathfinding or blank page development activities * Experience with cost estimating models similar to ACEIT or SEER is preferred This requisition may be filled at either the Principal Engineer (T-03 level) or Sr Principal Engineer (T-04 level). * Must be a US Citizen with an at time of application, current and within scope, with an investigation date within the last 6 years * 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 * Proficiency with Cost estimating tools (ACEIT, SEER, ReliaSoft, or similar) - 3 years of experience * Proficiency with Cost As an Independent Variable (CAIV) or Requirement vs Cost (RvC) modeling - 1 year of experience * Demonstrated technical expertise in the areas of cost specific modeling or modeling, simulation, and analysis (MS&A) - 3 years of experience * Experience utilizing base year dollars and understanding of inflation / Net Present Value (NPV) - 1 year * Knowledge of Agile development practices Principal Systems Engineer (T-03 level): * Bachelor's degree in a STEM (Science, Technology, Engineering or Mathematics) discipline with a minimum 5 years of related experience; 3 years with a Master's; or 1 years with a PhD * Bachelor's degree in a STEM (Science, Technology, Engineering or Mathematics) discipline with a minimum 8 years of related experience; 6 years with a Master's; or 4 years with a PhD * Active Top Secret Clearance * Proficiency with data handling scripting (SQL, Azure, PowerBI or similar) - 1 year of experience * Proficiency with engineering scripting (Python, C++/C#, Matlab, VBA or similar) - 1 year of experience * Experience with cost estimating ACAT 1 programs * Expertise with Systems Engineering (SE) (Systems engineering V, systems integration, VV&A, or similar) * Experience defining confidence bounds and quantifying sources of error in models * Experience with Agile Release Train (ART) or Scaled Agile Framework (SAFe) * Experience with the Atlassian Tool Suite (Jira / Confluence) * Advanced use of standard Microsoft Office products to include development tools * Strong interest to interact with a wide variety of skills across multiple engineering domains. These engineering domains include: Systems Safety, Reliability, Availability, Maintainability, Integrated Logistics Support, Product Support, Digital Integration, and Sustainment Cost Modeling * Experience with pathfinding / blank page development efforts * INCOSE certifications * Knowledge of DoD CAPE guide, Title 10 U.S.C. Chapter 323, or DoDI 5000.73 * Capable of working with minimal direction, independently determines and develops technical objectives of assignments, and presents work upon completion for high level review ## Related Videos - [Alibaba Big Data and Machine Learning Technology](https://www.wearedevelopers.com/videos/37-alibaba-big-data-and-machine-learning-technology) - [Leveraging Large Language Models for Legacy Code Translation: Challenges and Solutions](https://www.wearedevelopers.com/videos/1157-leveraging-large-language-models-for-legacy-code-translation-challenges-and-solutions) - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [PySpark - Combining Machine Learning & Big Data](https://www.wearedevelopers.com/videos/44-pyspark-combining-machine-learning-big-data) - [Building a hypercar from scratch](https://www.wearedevelopers.com/videos/607-building-a-hypercar-from-scratch) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Résumé-Driven Development: How IT trends affect the job market for software developers](https://www.wearedevelopers.com/magazine/59-resume-driven-development-how-it-trends-affect-the-job-market-for-software-developers) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk)