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Principal Mechanical Engineer/Sr. Principal Mechanical Engineer

Northrop Grumman

Principal Mechanical Engineer/Sr. Principal Mechanical Engineer

full-timePosted: Aug 27, 2026Updated: Sep 1, 2026United States-Oklahoma-Oklahoma City

Job Description

RELOCATION ASSISTANCE: No relocation assistance availableCLEARANCE REQUIRED FOR START: NoCLEARANCE TYPE: SecretTRAVEL: Yes, 25% of the TimeDescriptionAt 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.DescriptionJoin NGC's 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.This position is contingent upon contract award/fundingAdvanced Test and Support Systems (ATSS) is seeking a Principle Mechanical Engineer/Senior Principle Mechanical Engineer (Level 3/4) to join our team of qualified and diverse individuals in Oklahoma City, OK. You will become part of an NGC team actively developing Avionics Testing Solutions and Specialized Test Equipment for the Sentinel Missile platform. We also work on and assist with the USAF B-2, E-3, and numerous other Government platforms. Our team members complete engineering efforts to solve complex problems and ensure warfighter supportability. The position will research, develop, design, and test electrical components, equipment, systems, and products for defense or commercial systems.Responsibilities:Design and define system architecture for new or existing complex integrated test systemsCoordinates design of subsystems and integration of total systems in a laboratory environmentOversight and ownership of engineering design as well as 2D/3D drawing formats and standards for a wide array of mechanical products:Product detailsProduct assembliesTest Bench/Bay assembliesTop Level installationsThermal AnalysisStress AnalysisWeight AnalysisDesign for ManufacturingFEA modelingDevelopment and coordination for internal and customer design reviews for the mechanical and system level designs of our productsDevelopment of supporting documentation (operating / user manuals, etc.) for our productsAssist in troubleshooting of built equipmentCoordination with engineering manager(s) to ensure product technical data packages meet project schedule commitmentsCoordinate between several internal and external stakeholder groups (Software Development, System Test, Cyber Operations, Procurement, etc.) to achieve contractual commitmentsEstablish milestones and monitor adherence to master plans and schedules.Identify program problems and assist in the establishing of solutions, such as allocation of resources, improved processes, or changing contractual specifications.Act independently to uncover and resolve issues associated with the development and implementation of programs.Support process improvement and establishment.Performs functional analysis, timeline analysis, detail trade studies, requirements allocation and interface definition studies to translate customer requirements into hardware and software specifications.Generate reports and presents to Government counterparts, defense contractors, and other cross-functional organizations.Provide leadership and mentoring in addition to being an individual performerHas technical insight and experience to know if test set-up and results make senseAbility to establish and maintain frequent inter-organizational and outside customer contacts on routine matters.Coordinates with team lead, electrical technicians, and I&T managers to complete tasking. May participate, prepare, and present material in program review boards (PDRs, CDRs, TRRs, FRBs, etc)Basic Qualifications: · Principle Mechanical Engineer: Bachelor's degree in Mech/Aero Engineering (or equivalent) with 5 years of related engineering experience OR a Master’s degree with 3 years of related engineering experience OR a PhD with 0 years of related engineering experience· Senior Principle Mechanical Engineer: Bachelor's degree in Mech/Aero Engineering (or equivalent) with 8 years of related engineering experience; OR a Master’s degree with 6 years of related engineering experience; OR a PhD with 3 years of related engineering experience· Ability to listen effectively, take direction, and possess initiative to accomplish assigned tasks and complete work in a timely fashion· Ability to read engineering drawings and specifications· Must be a U.S. Citizen with ability to obtain a DoD SECRET security clearance & special program accessAbility to obtain/maintain access to work on-site in Oklahoma City, Oklahoma.Experience in Aerospace or Defense industry· Experience leading multi-disciplinary technical teamsAbility to diagnose/troubleshoot/repair hardware components.Experience with CAD or similar design toolsPreferred Qualifications: · Active DoD SECRET or higher security clearance with investigation in the last five (5) years· Active Program clearance· Master’s Degree in Mechanical/Aerospace/Additive Manufacturing Engineering or related disciplineExperience in Additive Manufacturing or 3D-Print design & technologiesExperience in an Agile development environmentExperience in Instrumentation or Avionics SystemsExperience with any of the following CAD Software Tools and Data Management Products: CATIA, SolidWorks Mechanical/PDM, Siemens NX/Capital, Enovia SmarTeam, Team Center, ANSYS Fluent/Mechanical/Icepack/Discovery, Femap/Nastran/Patran, MATLAB· Experience in Power Distribution Systems· Experience with HW/SW Integration· Experience in Nuclear Surety· Experience in Manufacturing Engineering· Experience with AS9100, ASME, and ISO Standards implementationExperience with nuclear hardened systems.Experience with design for manufacturingFabrication and testing experience.Experience with Finite Element Analysis Method and other forms of analysisPrimary Level Salary Range: $84,700.00 - $158,600.00Secondary Level Salary Range: $0.00 - $0.00The 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.

Locations

  • United States-Oklahoma-Oklahoma City

Skills Required

  • Aerospaceintermediate
  • CADintermediate
  • Additive Manufacturingintermediate
  • Agile development environmentintermediate
  • Instrumentationintermediate
  • any of the following CAD Software Toolsintermediate
  • Power Distribution Systemsintermediate
  • HW/SW Integrationintermediate
  • Nuclear Suretyintermediate
  • Manufacturing Engineeringintermediate
  • AS9100intermediate
  • nuclear hardened systemsintermediate
  • design for manufacturingintermediate
  • Finite Element Analysis Methodintermediate

Required Qualifications

  • · Principle Mechanical Engineer: Bachelor's degree in Mech/Aero Engineering (or equivalent) with 5 years of related engineering experience OR a Master’s degree with 3 years of related engineering experience OR a PhD with 0 years of related engineering experience (experience, 5 years)
  • · Senior Principle Mechanical Engineer: Bachelor's degree in Mech/Aero Engineering (or equivalent) with 8 years of related engineering experience; OR a Master’s degree with 6 years of related engineering experience; OR a PhD with 3 years of related engineering experience (experience, 8 years)
  • · Ability to listen effectively, take direction, and possess initiative to accomplish assigned tasks and complete work in a timely fashion (experience)
  • · Ability to read engineering drawings and specifications (experience)
  • · Must be a U.S. Citizen with ability to obtain a DoD SECRET security clearance & special program access (experience)
  • Ability to obtain/maintain access to work on-site in Oklahoma City, Oklahoma. (experience)
  • Ability to obtain/maintain access to work on-site in Oklahoma City, Oklahoma. (experience)
  • Experience in Aerospace or Defense industry (experience)
  • Experience in Aerospace or Defense industry (experience)
  • · Experience leading multi-disciplinary technical teams (experience)
  • Ability to diagnose/troubleshoot/repair hardware components. (experience)
  • Experience with CAD or similar design tools (experience)
  • Ability to diagnose/troubleshoot/repair hardware components. (experience)
  • Experience with CAD or similar design tools (experience)

Preferred Qualifications

  • · Active DoD SECRET or higher security clearance with investigation in the last five (5) years (experience)
  • · Active Program clearance (experience)
  • · Master’s Degree in Mechanical/Aerospace/Additive Manufacturing Engineering or related discipline (degree in mechanical)
  • Experience in Additive Manufacturing or 3D-Print design & technologies (experience)
  • Experience in an Agile development environment (experience)
  • Experience in Instrumentation or Avionics Systems (experience)
  • Experience with any of the following CAD Software Tools and Data Management Products: CATIA, SolidWorks Mechanical/PDM, Siemens NX/Capital, Enovia SmarTeam, Team Center, ANSYS Fluent/Mechanical/Icepack/Discovery, Femap/Nastran/Patran, MATLAB (experience)
  • Experience in Additive Manufacturing or 3D-Print design & technologies (experience)
  • Experience in an Agile development environment (experience)
  • Experience in Instrumentation or Avionics Systems (experience)
  • Experience with any of the following CAD Software Tools and Data Management Products: CATIA, SolidWorks Mechanical/PDM, Siemens NX/Capital, Enovia SmarTeam, Team Center, ANSYS Fluent/Mechanical/Icepack/Discovery, Femap/Nastran/Patran, MATLAB (experience)
  • · Experience in Power Distribution Systems (experience)
  • · Experience with HW/SW Integration (experience)
  • · Experience in Nuclear Surety (experience)
  • · Experience in Manufacturing Engineering (experience)
  • · Experience with AS9100, ASME, and ISO Standards implementation (experience)
  • Experience with nuclear hardened systems. (experience)
  • Experience with design for manufacturing (experience)
  • Fabrication and testing experience. (experience)
  • Experience with Finite Element Analysis Method and other forms of analysis (experience)
  • Experience with nuclear hardened systems. (experience)
  • Experience with design for manufacturing (experience)
  • Fabrication and testing experience. (experience)
  • Experience with Finite Element Analysis Method and other forms of analysis (experience)

Responsibilities

  • Design and define system architecture for new or existing complex integrated test systems
  • Coordinates design of subsystems and integration of total systems in a laboratory environment
  • Oversight and ownership of engineering design as well as 2D/3D drawing formats and standards for a wide array of mechanical products:Product detailsProduct assembliesTest Bench/Bay assembliesTop Level installationsThermal AnalysisStress AnalysisWeight AnalysisDesign for ManufacturingFEA modeling
  • Design and define system architecture for new or existing complex integrated test systems
  • Coordinates design of subsystems and integration of total systems in a laboratory environment
  • Oversight and ownership of engineering design as well as 2D/3D drawing formats and standards for a wide array of mechanical products:
  • Product assemblies
  • Test Bench/Bay assemblies
  • Top Level installations
  • Thermal Analysis
  • Design for Manufacturing
  • Development and coordination for internal and customer design reviews for the mechanical and system level designs of our products
  • Development of supporting documentation (operating / user manuals, etc.) for our products
  • Assist in troubleshooting of built equipment
  • Coordination with engineering manager(s) to ensure product technical data packages meet project schedule commitments
  • Coordinate between several internal and external stakeholder groups (Software Development, System Test, Cyber Operations, Procurement, etc.) to achieve contractual commitments
  • Development and coordination for internal and customer design reviews for the mechanical and system level designs of our products
  • Development of supporting documentation (operating / user manuals, etc.) for our products
  • Assist in troubleshooting of built equipment
  • Coordination with engineering manager(s) to ensure product technical data packages meet project schedule commitments
  • Coordinate between several internal and external stakeholder groups (Software Development, System Test, Cyber Operations, Procurement, etc.) to achieve contractual commitments
  • Establish milestones and monitor adherence to master plans and schedules.
  • Identify program problems and assist in the establishing of solutions, such as allocation of resources, improved processes, or changing contractual specifications.
  • Act independently to uncover and resolve issues associated with the development and implementation of programs.
  • Support process improvement and establishment.
  • Performs functional analysis, timeline analysis, detail trade studies, requirements allocation and interface definition studies to translate customer requirements into hardware and software specifications.
  • Generate reports and presents to Government counterparts, defense contractors, and other cross-functional organizations.
  • Establish milestones and monitor adherence to master plans and schedules.
  • Identify program problems and assist in the establishing of solutions, such as allocation of resources, improved processes, or changing contractual specifications.
  • Act independently to uncover and resolve issues associated with the development and implementation of programs.
  • Support process improvement and establishment.
  • Performs functional analysis, timeline analysis, detail trade studies, requirements allocation and interface definition studies to translate customer requirements into hardware and software specifications.
  • Generate reports and presents to Government counterparts, defense contractors, and other cross-functional organizations.
  • Provide leadership and mentoring in addition to being an individual performer
  • Has technical insight and experience to know if test set-up and results make sense
  • Ability to establish and maintain frequent inter-organizational and outside customer contacts on routine matters.
  • Coordinates with team lead, electrical technicians, and I&T managers to complete tasking. May participate, prepare, and present material in program review boards (PDRs, CDRs, TRRs, FRBs, etc)
  • Provide leadership and mentoring in addition to being an individual performer
  • Has technical insight and experience to know if test set-up and results make sense
  • Ability to establish and maintain frequent inter-organizational and outside customer contacts on routine matters.
  • Coordinates with team lead, electrical technicians, and I&T managers to complete tasking. May participate, prepare, and present material in program review boards (PDRs, CDRs, TRRs, FRBs, etc)

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