{"id":4271309,"url":"https://alion.io/job/northrop-grumman-sentinel-sr-principal-systems-engineer-modeling-simulation-analysis","title":"Sentinel - Sr Principal Systems Engineer - Modeling Simulation & Analysis","company":{"id":12494,"name":"Northrop Grumman","domain":"northropgrumman.com","url":"https://alion.io/company/northropgrumman","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":80,"open_postings":515,"ghost_share":0.002,"stale_share":0.779,"repost_share":0.014,"time_to_fill_p50_days":28,"computed_at":"2026-11-12T10:38:37Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"lead","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Roy, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":122800,"max":184200,"currency":"USD","period":"year","gross":null,"usd_annual":184200},"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":true,"has_equity":false,"technologies":[{"name":"Agile","optional":false},{"name":"C#","optional":false},{"name":"C++","optional":false},{"name":"Confluence","optional":false},{"name":"MATLAB","optional":false},{"name":"Python","optional":false},{"name":"SQL","optional":false},{"name":"Verification & Validation","optional":false},{"name":"Cameo Systems Modeler","optional":true},{"name":"IBM DOORS","optional":true}],"status":"live","first_seen_at":"2026-11-13T17:54:33Z","employer_posted_date":"2026-11-13","last_verified_at":"2026-11-13T17:54:33Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"RELOCATION ASSISTANCE: Relocation assistance may be availableCLEARANCE REQUIRED FOR START: YesCLEARANCE TYPE: SecretTRAVEL: Yes, 10% of the TimeDescription\nAt Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon. We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work - and we have an insatiable drive to do what others think is impossible. Our employees are not only part of history, they're making history.Join Northrop Grumman on our continued mission to push the boundaries of possible across land, sea, air, space, and cyberspace. Enjoy a culture where your voice is valued and start contributing to our team of passionate professionals providing real-life solutions to our world’s biggest challenges. We take pride in creating purposeful work and allowing our employees to grow and achieve their goals every day by Defining Possible. With our competitive pay and comprehensive benefits, we have the right opportunities to fit your life and launch your career today.\nNorthrop Grumman Defense Systems is seeking to hire a Sr Principal Systems Engineer - Modeling, Simulation, and Analysis (MS&A) to join the team. This position will be located in Roy, UT and will support the Sentinel (GBSD) program in the Strategic Deterrent Systems (SDS) division.\nRoles and Responsibilities\nLead a diverse team of engineers on a variety of projects supporting Sentinel intercontinental ballistic missile (ICBM) weapon system accuracy\nPhysics-based predictive modeling and simulation of ICBM accuracy performance\nMaturation of Sentinel accuracy error models\nPost flight estimation of Sentinel accuracy performance\nEstimation of accuracy error model parameters using ground and flight test data\nValidation & verification (V&V) of Sentinel accuracy error models\nPreparation of Sentinel accuracy reports\nPresentations of projects and studies to Northrop Grumman Sentinel leadership and USG customers\nBasic Qualifications\nMust be a US Citizen with an active U.S. Government Secret Clearance , at time of application, current and within scope, with an investigation date within the last 6 years\nMust 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 need\nBachelor's degree in a STEM (Science, Technology, Engineering or Mathematics) discipline with a minimum 8 years of related experience; Master's degree with 6 years; or a PhD with 4 years\nMust be able to support program tasks in a secure lab environment (on site) for a minimum of 90% of their total work time\nDemonstrated experience with physics-based mathematical modeling and simulation\nExperience with scientific computer programming (Python, C++/C#, SQL, MATLAB, R or similar)\nExperience with Agile Development Agile methodologies and tools (JIRA/Confluence)\nExperience working with Systems Engineering and Integration and Test (SEIT) processes \nExperience leading a diverse team of engineers at multiple levels\nPreferred Qualifications\nAble to receive Special Access Program (SAP) approval and maintain it as determined by the company to meet its business need\nExperience modeling with Cameo Enterprise Architecture, MagicDraw (No Magic, Inc.) or other architecture modeling tools\nExperience with ICBM weapon system sustainment engineering and integration\nExperience managing requirements in DOORS \nExperience executing and boarding Risks, Issues & Opportunities\nExperience collaborating with multiple functional groups, subcontracts, and government customer representatives\nProactive self-starter capable of identifying gaps and problems in/with processes and proposing and implementing solutions\nStrong oral and written communication skills, including demonstrated experience with high value customer presentations, with ability to focus on multiple projects with competing priorities\nPosition Benefits\nAs a full-time employee of Northrop Grumman, you are eligible for our robust benefits package including:\nMedical, Dental & Vision coverage \n401k \nEducational Assistance \nLife Insurance \nEmployee Assistance Programs & Work/Life Solutions \nPaid Time Off \nHealth & Wellness Resources \nEmployee Discounts \nhttps://www.northropgrumman.com/who-we-are/total-rewards-benefits/\nThis position’s standard work schedule is a 9/80. The 9/80 schedule allows employees who work a nine-hour day Monday through Thursday to take every other Friday off. This role may offer a competitive relocation assistance package.\nPrimary Level Salary Range: $122,800.00 - $184,200.00The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate's experience, education, skills and current market conditions.Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay. Annual bonuses are designed to reward individual contributions as well as allow employees to share in company results. Employees in Vice President or Director positions may be eligible for Long Term Incentives. In addition, Northrop Grumman provides a variety of benefits including health insurance coverage, life and disability insurance, savings plan, Company paid holidays and paid time off (PTO) for vacation and/or personal business.The application period for the job is estimated to be 20 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates.Northrop Grumman is an Equal Opportunity Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO and pay transparency statement, please visit http://www.northropgrumman.com/EEO. 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