Senior Principal Mechanical Systems Engineer

Relocation Assistance

Relocation assistance may be available.

No clearance required for start; clearance type: SCI.

Yes, 10% of the time.

The Naval & Oceanic Systems business unit headquartered in Annapolis, MD is seeking a Senior Principal Mechanical Systems Engineer to join our team. The role involves concept development, problem solving, technical planning, design development, hardware integration, and testing. The engineer will translate customer requirements into system solutions that consider technical, schedule, and cost constraints, with a focus on undersea-domain systems such as torpedoes, towed vehicles, Uncrewed Underwater Vehicles (UUVs), Remotely Operated Vehicles (ROVs), acoustic communications, sonar systems, and submarine interfacing.

• Translate customer requirements into system solutions that consider technical, schedule, and cost constraints.

• Concept development, design, and hardware integration/testing on undersea-domain systems.

• Work collaboratively, prioritize tasks, and manage multiple projects simultaneously.

• Analyze complex problems and develop solutions with strong verbal and written communication abilities.

• BS degree in Engineering (Aerospace, Mechanical, or equivalent STEM) and a minimum of 8 years of experience in mechanical engineering; or MS degree with 6 years of experience;
  PhD with 4 years of experience.
• Ability to work on-site at Annapolis, MD campus.
• Ability to work in a fast‑paced environment, supporting multiple projects simultaneously.
• Proficiency in using common engineering design, production, analysis, and office tools.
• Experience with Finite Element Analysis tools, bolted joint analysis, and structural hand calculations.
• Experience using 3D CAD software to create and review models.
• US citizen with the ability to obtain a TS/SCI and pass a polygraph.

• Familiarity with underwater/naval systems such as torpedoes, towed vehicles, UUVs, ROVs, submarines.
• Experience designing hardware and structures subjected to long‑term sea water submersion such as pressure vessels.
• Working knowledge of environmental corrosion and methods used to mitigate its effects.
• Experience interpreting and applying GD&T (ASME Y14.5‑2009).
• Experience with manufacturing design elements including welding, machining, casting, and forging.
• Proficiency in conducting Finite Element Analysis, bolted joint analysis, and structural hand calculations.
• Active TS/SSBI/SCI clearance with current polygraph.

Primary Level Salary Range: $ – $. Employees may be eligible for overtime, shift differential, discretionary bonus, and Long Term Incentives for certain positions. Northrop Grumman provides a variety of benefits including health insurance, life and disability insurance, savings plan, company‑paid holidays and paid time off (PTO).

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 statement, visit

U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.