Northrop Grumman’s Defense Systems sector is seeking a Principal Mechanical Engineer/Sr. Principal Mechanical Engineer to join a multi-functional team of Electrical, Mechanical, and Systems Engineers in Roy, UT. This position is in our Strategic Deterrent Systems Division to execute the Engineering and Manufacturing Development phase of the Sentinel Program.
The primary objective of this role is to collaborate across Systems Engineering, System Test, Global Supply Chain, suppliers, and other Integrated Product Teams (IPTs) to develop and review Environmental Control System hardware requirements, specifications, designs, trade studies, and analyses for the purpose of supporting incremental system maturity milestones and hardware deliveries. The successful candidate will be comfortable with working in a dynamic people-focused environment and collaborating across multiple internal and external stakeholders in order to achieve organizational goals.
What You’ll Get to Do:
- Collaborate with stakeholders to decompose technical requirements, develop complete and verifiable requirements, and conduct trade studies
- Generate and update specifications as part of a Systems Engineering framework for the purpose of releasing to suppliers and supporting the procurement process
- Develop design and analysis artifacts to support design reviews, customer deliverables, and hardware procurement workflows
- Perform heating and cooling calculations to size HVAC equipment
- Select appropriate HVAC equipment to meet size and system requirements
- Review and provide comments to supplier-submitted drawings and contractual deliveries
Position Benefits:
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 positions standard work schedule is a 9/80. The 9/80 schedule allows employees who work a nine-hour day Monday through Thursday to take every other Friday off.
Basic Qualifications:
- Principal Mechanical Engineer: Bachelor’s degree in a STEM field (Science, Technology, Engineering, Mathematics) with 5 years of experience; or Master's degree with 3 years of experience
- Sr. Principal Mechanical Engineer: Bachelor’s degree in a STEM field (Science, Technology, Engineering, Mathematics) with 8 years of experience; 6 years’ experience with a Master’s degree
- Required Active DoD Secret security clearance at the time of application.
- Must be able to obtain and maintain Special Access Programs (SAP) clearance
- Must be proficient with Microsoft Office tools - PowerPoint, Excel, Word
- Ability to understand and interpret requirements
- Must be able to work independently, function in a dynamic environment, and be flexible to changing direction
Preferred Qualifications:
- Master’s degree in Mechanical Engineering
- Experience with Environmental Control Systems (ECS) and Heating, Ventilation, and Air conditioning (HVAC) system design and verification
- Experience with producing construction drawing packages
- Experience with Revit
- Experience with Carrier HAP, NX, and Product Lifecycle Management (PLM) software
- Familiarity with Systems Engineering and Model Based Systems Engineering (MBSE) processes
- Professional Engineer (PE) license
- Experience with estimation, bidding, proposals, or RFPs
- Experience managing a subcontractor
Skills Required
- Bachelor's degree in a STEM field with relevant experience (Principal: B.S. +5 years; Sr Principal: B.S. +8 years) or Master's with reduced experience requirements
- Active DoD Secret security clearance at time of application
- Ability to obtain and maintain Special Access Programs (SAP) clearance
- Proficiency with Microsoft Office tools (PowerPoint, Excel, Word)
- Ability to understand and interpret technical requirements
- Ability to work independently, adapt in a dynamic environment, and be flexible to changing direction
- Master's degree in Mechanical Engineering
- Experience with Environmental Control Systems (ECS) and HVAC system design and verification
- Experience producing construction drawing packages
- Experience with Revit
- Experience with Carrier HAP, NX, and Product Lifecycle Management (PLM) software
- Familiarity with Systems Engineering and Model Based Systems Engineering (MBSE) processes
- Professional Engineer (PE) license
- Experience with estimation, bidding, proposals, or RFPs
- Experience managing a subcontractor
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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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.
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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.
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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
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.







