Principal / Sr Principal Mechanical Engineer

Posted 3 Days Ago
Be an Early Applicant
Huntsville, AL, USA
In-Office
99K-185K Annually
Senior level
Aerospace • Logistics • Security • Software • Cybersecurity
The Role
Designs mechanical parts and assemblies for command-and-control defense systems using 3D CAD and 2D drawings. Performs structural, thermal, weight, center-of-mass, and transportability analyses; supports prototyping, production, testing, suppliers, and design reviews. Leads technical teams, troubleshoots hardware, tracks tasks in an Agile environment, and mentors engineers. Work may involve vehicle, shipboard, and operations-center installations for Department of Defense projects.
Summary Generated by Built In
RELOCATION ASSISTANCE: No relocation assistance available

CLEARANCE REQUIRED FOR START: Yes

CLEARANCE TYPE: Interim Secret

TRAVEL: Yes, 10% of the TimeDescription

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.

Mid- to Senior-level mechanical engineering position in the Huntsville Hardware Engineering functional department.  This position will support one or more projects performing design engineering for integration of Command and Control systems, such as radios, networks, antennas, and power equipment, in support of Department of Defense projects. These projects include anti-artillery systems, security and warning systems, air and missile defense components; installations in tactical wheeled and armored vehicles, aboard ships, or in operations centers; as well as associated support activities. Position supports a functional matrixed organization; employee's final program assignment may vary depending on staffing needs.


Responsibilities may include, but are not limited to:

  • Design of mechanical parts and assemblies, including 3D CAD modeling; 2D drawing drafting, reviews, revision, and release; selection of components and materials; support of trade studies
  • Communicating with suppliers and customers to exchange technical information
  • Collaborating with other functional areas on various aspects of product design/documentation, including procurement, production, logistics, or configuration management
  • Hands-on troubleshooting, inspection, or assembly of parts/subsystems in support of prototyping, production, or test
  • Performing engineering analyses, such as weight and center of mass, structural, transportability, or thermal; as well as authoring reports documenting them
  • Creating, delivering, and defending engineering briefings or reports to support design review activities
  • Tracking & reporting task status in an Agile for Hardware environment
  • Leading or providing technical supervision to engineering teams conducting any of the above activities
  • Training and mentoring junior or mid-level engineers

Basic Qualifications:

  • Bachelor’s degree in Mechanical or Aerospace Engineering
  • Minimum 5 years of experience (for level 3) or 8 years of experience (for level 4) in mechanical design engineering
  • Experience in 3D parametric modeling using any industry-standard 3D CAD package, NX or SolidWorks preferred
  • Experience drafting & reviewing 2D mechanical drawings per ASME standards
  • Experience using any industry-standard Product Lifecycle Management system, TeamCenter preferred
  • Experience using Manufacturing Resource Planning systems, SAP preferred
  • Demonstrated good verbal/written communication skills & proactive inter-personal initiative
  • Experience leading teams solving complex technical problems in a collaborative environment
  • Active DoD Secret or greater security clearance (or interim)

Preferred Qualifications:

  • Experience in integration design of C2 systems supporting DoD customers
  • Experience preparing or reviewing proposals for DoD customers
  • Experience with industry and military standards (MIL-STD-810, MIL-STD-1472, etc.)
  • Experience in one or more of the following technical areas:
    • Geometric Dimensioning and Tolerancing (GD&T)
    • Design or inspection of weldments per AWS
    • Dynamic stress analysis
    • Design, analysis, or selection of HVAC systems
    • Military coatings, surface treatments, and corrosion control
    • Design of electromagnetically shielded enclosures
    • Cable assembly modeling and routing in CAD, NX preferred
    • Model based definition (MBD/PMI), NX preferred
    • “Digital Twin” hardware modeling and simulation

Primary Level Salary Range: $98,900.00 - $148,300.00Secondary Level Salary Range: $123,400.00 - $185,000.00

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 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

  • Bachelor’s degree in Mechanical Engineering or Aerospace Engineering
  • At least 5 years of mechanical design engineering experience for Level 3 or 8 years for Level 4
  • Experience with 3D parametric modeling using an industry-standard 3D CAD package
  • Experience drafting and reviewing 2D mechanical drawings according to ASME standards
  • Experience using an industry-standard Product Lifecycle Management system
  • Experience using Manufacturing Resource Planning systems
  • Strong verbal and written communication skills
  • Proactive interpersonal initiative
  • Experience leading teams that solve complex technical problems collaboratively
  • Active DoD Secret or greater security clearance, or interim clearance
  • Experience with NX or SolidWorks
  • Experience with Teamcenter
  • Experience with SAP
  • Experience integrating command-and-control systems for DoD customers
  • Experience preparing or reviewing proposals for DoD customers
  • Experience with industry and military standards such as MIL-STD-810 and MIL-STD-1472
  • Experience with GD&T
  • Experience designing or inspecting weldments according to AWS standards
  • Experience with dynamic stress analysis
  • Experience designing, analyzing, or selecting HVAC systems
  • Experience with military coatings, surface treatments, and corrosion control
  • Experience designing electromagnetically shielded enclosures
  • Experience with cable assembly modeling and routing in CAD
  • Experience with model-based definition and PMI
  • Experience with digital twin hardware modeling and simulation

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.

  • Healthcare Strength — Health coverage offers multiple medical plan options by region alongside dental, vision, mental‑health resources, and wellness programs. Recent materials also highlight added family‑building support, including a dedicated fertility benefit.
  • Retirement Support — The 401(k) savings plan is positioned as competitive with a company match, auto‑escalation features, and access to an employee stock fund/ESPP. Official filings and benefits guides emphasize retirement as a core element of the Total Rewards package.
  • Leave & Time Off Breadth — Many sites offer a 9/80 schedule, generous PTO, paid holidays, and flexible/telework options where program needs allow. Paid parental and caregiver leave are prominently featured, with recent enhancements for the delivering parent.

Northrop Grumman Insights

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The Company
HQ: Charlotte, North Carolina
85,636 Employees

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.

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