{"id":1971061,"url":"https://alion.io/job/northrop-grumman-gnc-engineer-or-principal-gnc-engineer","title":"GNC Engineer OR Principal GNC Engineer","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":471,"ghost_share":0,"stale_share":0.777,"repost_share":0.015,"time_to_fill_p50_days":27,"computed_at":"2026-11-11T05:49:22Z"}},"role":"Aerospace","role_family":"Aerospace","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":["El Segundo, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":91800,"max":137600,"currency":"USD","period":"year","gross":null,"usd_annual":137600},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":true,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-10-06T19:19:47Z","employer_posted_date":"2026-10-06","last_verified_at":"2026-11-11T20:47:37Z","board_verified":true,"closed_at":null,"days_open":36,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":36},"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.Northrop Grumman Aeronautics Systems has opportunities for Guidance Navigation Control Engineer OR Principal Guidance Navigation Control Engineer to join our team in El Segundo, CA!\nDuties Include:\nDesigns, develops, implements, verifies, and tests algorithms and software and simulation tools to perform guidance, navigation and control of aircraft\nStatistical processing of measured data points and their substitution into algorithms simulating physical reality.\nFormulation of specific equations to achieve a desired position, orientation, or orbit.\nControl design and analyses processes consist of the development of the control laws and hardware and software requirements for aircraft.\nThis position may be filled at the GNC Engineer level or the Principal GNC level, depending upon the qualifications below.\nBasic Qualifications for GNC Engineer:\nBachelor of Science degree in a relevant STEM (Science, Technology, Engineering, or Mathematics) discipline with 2 years of related engineering experience; OR a Master of Science degree in a relevant STEM discipline with 0 years of related engineering experience.\nAbility to obtain a US Government Secret clearance\nAbility to obtain and maintain Special Program Access (SAP). This SAP must be obtained within a reasonable amount of time as determined by the company to meet its business needs.\nBasic Qualifications for Principal GNC Engineer:\nBachelor of Science degree in a relevant STEM (Science, Technology, Engineering, or Mathematics) discipline with 5 years of related engineering experience; OR a Master of Science degree in a relevant STEM discipline with 3 years of related engineering experience; OR a PhD in a relevant STEM discipline with 1 year of related engineering experience.\nAbility to obtain a US Government Secret clearance\nAbility to obtain and maintain Special Program Access (SAP). This SAP must be obtained within a reasonable amount of time as determined by the company to meet its business needs.\nPreferred Qualifications for both levels:\nActive US Government Secret clearance\nPrimary Level Salary Range: $91,800.00 - $137,600.00Secondary Level Salary Range: $114,000.00 - $171,000.00The 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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