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The Naval & Oceanic Systems business unit headquartered in Annapolis, MD is seeking dependable individuals willing to work in a collaborative environment and that are interested in expanding their horizons. The Mechanical Engineering Department is seeking a Principal Mechanical Systems Engineer / Senior Principal Mechanical Systems Engineer with a naval architecture or ocean engineering background in submersibles and underwater vehicles to join our team of qualified, diverse individuals.
Essential Functions:
Perform naval architectural roles associated with underwater vehicle system design including requirements and operations analysis, conceptual vehicle design, pressure hull sizing, variable ballast assessment, basic hydrodynamic analysis, energy system sizing, propulsion/propulsor design, weight, equilibrium, stability, and trim calculations and tests, and auxiliary systems design. The successful candidate will be expected to provide technical leadership to their programs in all areas of naval architecture.
The candidate must be able to collaborate in a team environment, prioritize and adjust tasks to accomplish the project result, prioritize multiple responsibilities and/or accomplishing them simultaneously, and comprehend and analyze complex problems and develop solutions. Excellent verbal and written communication skills are required.
Basic Qualifications for a Principal Mechanical Systems Engineer (Naval Architect):
BS degree in Naval Architecture, Ocean Engineering, or STEM equivalent and a minimum of 5 years of experience in the design, testing and/or operation of marine vehicles or MS degree with 3 years of experience
Proficiency with naval architectural principles, tools, and calculations
Proficiency in using common engineering design, production, analysis, and office tools
US citizen with the ability to obtain a TS/SCI and pass a polygraph
Basic Qualifications for a Senior Principal Mechanical Systems Engineer (Naval Architect):
BS degree in Naval Architecture, Ocean Engineering, or STEM equivalent and a minimum of 8 years of experience in the design, testing and/or operation of marine vehicles or MS degree with 6 years of experience
Proficiency with naval architectural principles, tools, and calculations
Proficiency in using common engineering design, production, analysis, and office tools
US citizen with the ability to obtain a TS/SCI and pass a polygraph
Preferred Qualifications:
Demonstrated skills/experience in the performance modeling, design, testing and/or operation of manned submersibles, underwater vehicles, and launch and recovery systems
Experience in towed systems and umbilical dynamic analysis including the use of Orcaflex
Experience with 3D CAD modeling in NX
Experience in the construction, testing, and certification of underwater vehicles
Active TS/SCI clearance
NGFeaturedJobs
Primary Level Salary Range: $108,800.00 - $163,200.00Secondary Level Salary Range: $135,800.00 - $203,600.00The 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. U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.Skills Required
- BS in Naval Architecture, Ocean Engineering, or STEM equivalent and minimum 5 years experience in design, testing or operation of marine vehicles (or MS with 3 years).
- BS in Naval Architecture, Ocean Engineering, or STEM equivalent and minimum 8 years experience in design, testing or operation of marine vehicles (or MS with 6 years).
- Proficiency with naval architectural principles, tools, and calculations.
- Proficiency using common engineering design, production, analysis, and office tools.
- US citizen with ability to obtain TS/SCI and pass a polygraph.
- Excellent verbal and written communication skills.
- Ability to collaborate in a team environment, prioritize tasks, and analyze complex problems to develop solutions.
- Demonstrated experience in performance modeling, design, testing, and/or operation of manned submersibles, underwater vehicles, and launch and recovery systems.
- Experience in towed systems and umbilical dynamic analysis, including use of Orcaflex.
- Experience with 3D CAD modeling in NX.
- Experience in construction, testing, and certification of underwater vehicles.
- Active TS/SCI clearance.
Northrop Grumman Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Northrop Grumman and has not been reviewed or approved by Northrop Grumman.
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Retirement Support — 401(k) matching is considered strong, with additional defined-benefit coverage for certain cohorts and options like catch-up contributions. Retirement programs are repeatedly highlighted as a core strength of the total rewards.
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Leave & Time Off Breadth — PTO, company-paid holidays, and compressed work schedules (such as 9/80) provide meaningful time away and flexibility. These scheduling options are cited as a major quality-of-life benefit across many locations.
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Parental & Family Support — Paid parental leave alongside caregiver leave, adoption assistance, and back-up care supports a range of family needs. These programs have been expanded recently, signaling continued investment in family support.
Northrop Grumman Insights
What We Do
We are a close-knit community of big thinkers collaborating to keep the world safe. Our passion, creativity and expertise bring next-level technology solutions to life in autonomous systems, cyber, C4ISR, strike, space, and logistics and modernization for our customers around the globe. On the Northrop Grumman team, you’ll join our pursuit of excellence immersed in a dynamic culture of innovation and respect. Your unique perspective will help achieve our shared vision for the future of global security. Every step of the way, you'll be supported by world-class training, employee resource groups and a comprehensive benefits package that enables greater health and happiness for you and your family. Worldwide and across disciplines, we’re challenging what’s possible for technology to protect people and places from undersea to outer space and into cyberspace. And we see the impact of our performance every day. We are Northrop Grumman, and we work on what matters—now, you too can make a difference. Explore opportunities in engineering, IT, manufacturing, business management, cybersecurity and more with us. Northrop Grumman is committed to hiring and retaining a diverse workforce. We are proud to be an Equal Opportunity/Affirmative Action Employer.






