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Sr. Principal II Mechanical Engineer

BAE Systems

Company : BAE Systems

Location : Hudson, NH, 03051

Posted Date : 15 September 2025

Job Type : Full Time

Category : Mechanical Engineering

Occupation : Mechanical Engineer

Job Details

Job Description We are seeking a talented and experienced Senior Principal II Mechanical Engineer with experience in the area of electronic packaging for the design and development of military communication and sensing equipment. You will become the next Subject Matter Expert (SME) on our team of talented engineers.
The candidate shall be well versed in using solid modeling tools (CREO preferred) and have a proven capability in applying those tools within the design and review process with demonstrated creativity. A familiarity with a comprehensive design process is required including conceptual and final design, support to procurement, work hands-on with assembly personnel, engineering test, debug, integration and support of product qualification.
Key Responsibilities:
• Perform conceptual and detailed mechanical design
• Work with program leadership and recommend solutions to complex problems
• Comprehensively document designs
• Communicate with a cross disciplinary team of stakeholders to ensure the final product meets all requirements
• Create technical presentations on designs, risk items
• Perform trade studies
• Present designs at design reviews
• Support procurement and build of prototype designs
• Support qualification activities
• Support technical demonstrations
• Design for manufacturing (DFM)
Required Education, Experience, & Skills • The candidate shall possess an understanding in the application of heat transfer principles, strength of materials, materials selection and the ability to apply those principles to unique mechanical design challenges.
• The ability to work in small design teams and to effectively communicate within the team is required.
• Experience with finite element analysis (FEA) and computational fluid dynamics (CFD).
• Candidate shall also be able to work within a broader program team and be able to communicate across functional boundaries in order to solve problems and achieve common goals.
• Bachelor's Degree in Mechanical or Aerospace Engineering and 15+ years of relevant experience in electronics packaging.
• Expertise in solid modeling (CREO preferred).
• Clear understanding of core mechanical engineering principles (heat transfer, strength of materials, materials selection).
• Ability to design and develop complex mechanical systems and components.
• Experience with product development, from concept to production.
• Familiarity with manufacturing processes, including machining, casting, and 3D printing.
• Able to obtain a TS and SCI clearance.
• Clear communication - both oral and written - and a positive attitude.
• Ability to work effectively on a team either on-site or remotely. Preferred Education, Experience, & Skills • Master's Degree in Mechanical or Aerospace Engineering and 15+ years of relevant experience.
• The ability to perform thermal and/or structural analysis using industry simulation tools (ANSYS Workbench preferred) is a plus.
• Active Secret DoD Security Clearance within the last two years.
• Experience with drafting principles and geometric dimensioning & tolerancing in accordance with ASME Y14.5-2009.
• Experience/Expertise in thermal/structural Finite Element Analysis (FEA)
• Ability to mentor less experienced engineers
• The use of commercially available schedule tools and application of those tools within EVMS is a plus.
Pay Information
Full-Time Salary Range: $ - $
Please note: This range is based on our market pay structures. However, individual salaries are determined by a variety of factors including, but not limited to: business considerations, local market conditions, and internal equity, as well as candidate qualifications, such as skills, education, and experience.
Employee Benefits: At BAE Systems, we support our employees in all aspects of their life, including their health and financial well-being. Regular employees scheduled to work 20+ hours per week are offered: health, dental, and vision insurance; health savings accounts; a 401(k) savings plan; disability coverage; and life and accident insurance. We also have an employee assistance program, a legal plan, and other perks including discounts on things like home, auto, and pet insurance. Our leave programs include paid time off, paid holidays, as well as other types of leave, including paid parental, military, bereavement, and any applicable federal and state sick leave. Employees may participate in the company recognition program to receive monetary or non-monetary recognition awards. Other incentives may be available based on position level and/or job specifics.
About BAE Systems Electronic Systems BAE Systems, Inc. is the U.S. subsidiary of BAE Systems plc, an international defense, aerospace and security company which delivers a full range of products and services for air, land and naval forces, as well as advanced electronics, security, information technology solutions and customer support services. Improving the future and protecting lives is an ambitious mission, but it’s what we do at BAE Systems. Working here means using your passion and ingenuity where it counts – defending national security with breakthrough technology, superior products, and intelligence solutions. As you develop the latest technology and defend national security, you will continually hone your skills on a team—making a big impact on a global scale. At BAE Systems, you’ll find a rewarding career that truly makes a difference. Electronic Systems (ES) is the global innovator behind BAE Systems’ game-changing defense and commercial electronics. Exploiting every electron, we push the limits of what is possible, giving our customers the edge and our employees opportunities to change the world. Our products and capabilities can be found everywhere – from the depths of the ocean to the far reaches of space. At our core are more than 14,000 highly talented Electronic Systems employees with the brightest minds in the industry, we make an impact – for our customers and the communities we serve.
This position will be posted for at least 5 calendar days. The posting will remain active until the position is filled, or a qualified pool of candidates is identified.

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