Principal/Sr Principal Mechanical Systems Design Integrator - 19584*
- Location
- United States-California-Manhattan Beach; United States-Utah-Roy
- Work mode
- On-site
- Employment type
- Full-time
About the job
RELOCATION ASSISTANCE: No relocation assistance available
CLEARANCE REQUIRED FOR START: Yes
CLEARANCE TYPE: Secret
TRAVEL: Yes, 10% of the Time Description
At 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.
Northrop Grumman Defense Systems is seeking a Principal/Sr Principal Mechanical Systems Design Integrator in Manhattan Beach, CA or Roy, UT to work with our Sentinel Systems Engineering & Integration (SE&I) Business Unit’s System Integration & Sustainment (SIS) Operating Unit and contribute to the Weapon System Integration (WSI) team. This multi-tiered and multi-disciplined team assesses design compatibilities across program segments. The team serves as the objective integrators to ultimately ensure full-lifecycle capability effectiveness through gap assessments (requirements, interfaces, architecture, process, etc.), risk identification and mitigation, and issue discovery and handling with a primary focus on cross-segment boundaries. The team serves as system integrators to facilitate systems of systems interoperability and joint systems integration in partnership with customer counterparts and other key stakeholders across the enterprise.
What You’ll Get To Do:
The candidate will be a member of WSI’s Mechanical Design Integration (MDI) team and will:
- Leverage 3D CAD development experience and knowledge of mechanical design and design integration principles to review high-level program NX models and Interface Control Models (ICMs) for potential gaps or issues
- Clearly demonstrate foundational mechanical and systems engineering skills to drive process and technical gap resolution of interface and requirement design solutions to achieve program and contract objectives
- Support engineering processes & analyses across product team designs to prove successful design integration and analyze for potential gaps at a high level
- Support the delivery of designs packages in a cross functional environment to achieve a compliant mechanical interface design across a weapon system
- Foster engagement across diverse teams, ensuring appropriate coordination between SE&I and other integration, systems, mechanical design teams
- Mentor and coach
- Participate in technical planning, process development and improvement, and cost and risk management for program integrated systems
- Perform functional analysis, timeline analysis, detail trade studies, requirements allocation assessments, and interface definition studies to ensure customer requirements are translated into effective design solutions
- Lead Integration activities in support of systems-of-systems integration which may include integration test planning, problem identification and reporting, integration event execution, coordination with multiple stakeholders to facilitate effective and efficient communication
- Demonstrate strong leadership and management skills, with a track record as a motivated leader, an effective communicator, and problem solver who is able to develop and maintain good working relationships with internal and external stakeholders
- Demonstrate a commitment to ethics and integrity, and the capability to innovate while challenging traditional ways of doing business
- Work independently with minimum supervision, positive demeanor and highest ethics
Basic Qualifications
- Must have an active U.S. Government DoD Secret security clearance at time of application, current and within scope, with an investigation date within the last 6 years
- Must have the ability to obtain a U.S. Government DoD Top Secret security clearance
- Must have the ability to obtain and maintain Special Access Program (SAP) approval within a reasonable period, as determined by the company to meet its business needs
- Knowledge of mechanical design and design integration principles
- 1+ year(s) experience with product lifecycle management (PLM) systems (e.g. CPLM/Siemens Teamcenter)
- Working knowledge of systems engineering principles and processes
Principal Level - T03:
- BS in a STEM discipline from an accredited university with 5 years of related experience, 3 years with Masters, 1 year with PhD
- 3+ years experience in Mechanical Engineering
- 2+ years direct development experience of mechanical interface products (ICMs), including interfacing with other IPTs
- 1+ year(s) experience with management or execution of interface products (Interface Requirements Specification (IRS), Interface Design Description (IDD), Interface Control Document (ICD)) and requirement specifications
- 2+ years experience on large scale / complex aerospace/defense system development across multiple Engineering and Manufacturing Development (EMD) lifecycle phases: preliminary design, detailed design, integration and test, verification and sell off, transition to production.
- 1+ year(s) experience in developing and executing Mechanical Engineering process governance documentation &/or mechanical risk management
- 1+ year(s) experience developing 3D CAD models with Product Manufacturing Information (PMI) annotation in tools such as NX, Solid Edge, CATIA, etc.
Sr Principal Level - T04:
- BS in a STEM discipline from an accredited university with 8 years of related experience, 6 years with Masters, 4 years with PhD
- 5+ years experience in Mechanical Engineering
- 3+ years direct development experience of mechanical interface products (ICMs), including interfacing with other IPTs
- 2+ years experience with management or execution of interface products (IRS, IDD, ICD) and requirement specifications
- 3+ years experience on large scale / complex aerospace/defense system development across multiple EMD lifecycle phases: preliminary design, detailed design, integration and test, verification and sell off, transition to production.
- 2+ years experience in developing and executing Mechanical Engineering process governance documentation and/or mechanical risk management
- 1+ year(s) experience in team environments with technical leadership responsibilities including but not limited to leading a large group of engineers, briefing program leadership, and driving program execution
- 2+ years experience developing 3D CAD models with PMI annotation in tools such as NX, Solid Edge, CATIA, etc.
Preferred Qualifications
- Experience with cable routing development in NX and Siemens Capital
- Active Special Access Program (SAP)
- Bachelor's and/or Master’s Degree in Mechanical or Aerospace Engineering from an accredited institution
- Working knowledge of program’s Engineering Drawing and Modeling Manual (EDMM) and/or Interface Control Model Manual
- 3+ years experience in ICBMs and past/active employment with MMIII or Sentinel Weapon Systems
- 3+ years of experience in Systems Engineering
- 2+ year(s) Direct development experience of interface products (Interface Requirements Specification (IRS), Interface Design Description (IDD), Interface Control Document (ICD)) and requirement specifications
- 1+ years experience in creating, updating, and maintaining requirements specifications in Dynamic Object-Oriented Requirements System (DOORS)
- Strong understanding and broad application of complex engineering systems (engineering standards, configuration management, material review board, process control, tooling, facilities, software, etc.) for the development of complex systems-of-systems
- Strong oral and written communication skills, including demonstrated experience with high value customer presentations, with ability to focus on multiple projects with competing priorities
- Experience executing and boarding Risks, Issues & Opportunities
- Working knowledge of Geometric Dimensioning and Tolerancing, drawing creation, and PMI (ASME Y14.5); tolerance stack-up analysis; ASME Y14.5 GDTP 2009 Senior-Certification; etc.
- Proficiency in Siemens Vis-VSA and/or 3DCS Variation Analysis software (or similar software like Sigmetrix CETOL, etc.)
- Proficiency in Finite Element Analysis (FEA)
- Experience developing and releasing mechanical assembly, installation, and collector Product Definition Packages (PDPs) and going through the lifecycle of the release process through Siemens Teamcenter (CPLM)
- Demonstrating leadership principles – Integrity, respect, organizational, communication, etc.
- Demonstrated proficiency in analytical thinking and problem-solving skills and systems thinking mindset
- Experience with creating and executing schedule & technical recovery plans
- Strong work ethic, decision making, and the ability to work self-sufficiently
- Experience working across program organizations to find solutions
- Works well in a distributed team environment
- Experience with developing architectural diagrams
- Scrum Master experience and/or use of agile management in tools such as Atlassian Jira and Confluence
- Earned Value Management (EVM) experience
- Experience with team leadership/management
- Experience or working knowledge in a specialty field (Structural; Thermal; Analysis; Parts, Materials, & Processes (PM&P), corrosion resistance, and material compatibility; building/vehicle design; Range Safety (AFSPCMAN 91-710); etc.)
As a full-time employee of Northrop Grumman, you are eligible for our robust benefits package including:
- Medical, Dental & Vision coverage
- 401k
- Educational Assistance
- Life Insurance
- Employee Assistance Programs & Work/Life Solutions
- Paid Time Off
- Health & Wellness Resources
- Employee Discounts
This position’s standard work schedule is 9/80. The 9/80 schedule allows employees who work a nine-hour day Monday through Thursday to take every other Friday off.
#Sentinelsystems
Primary Level Salary Range: $98,400.00 - $171,000.00
Secondary Level Salary Range: $122,800.00 - $213,400.00
The 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
From Northrop Grumman Corp's careers page (Workday), checked 4 Nov 2026.
How to apply
- Select Apply on northropgrumman.com. It opens Northrop Grumman Corp's own application form in a new tab, run on Workday.
- Fill in the form and upload your résumé there. Jobiwork never sees your application.
- Northrop Grumman Corp will reply to you directly. No real employer asks you for money to apply.
Posted 4 Nov 2026 · checked 4 Nov 2026 · Report this job