Senior Principal III Mechanical Engineer, Product Line Subject Material Expert (SME)

BAE Systems

Nashua, New Hampshire, United States Posted October 28, 2026

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On-site Full-time Senior
Job Description

Seeking a Senior Principal III Mechanical Engineer to lead the design and development of advanced military systems, ensuring high performance and reliability. Oversee the full product lifecycle and collaborate with multidisciplinary teams. Ideal for experienced engineers with a strong background in mechanical systems and a passion for continuous improvement.

Required Skills
collaboration process improvement
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