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Senior Mechanical Engineer United States Jobs (On-site work)

89 Job Offers

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Senior Mechanical Engineer (Electromechanical)
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Join Endurance in Seattle as a Senior Mechanical Engineer to design electromechanical hardware for modular subsea geothermal power plants. Requires 6+ years in demanding environments and full component ownership.
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Endurance Energy
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Senior Diagnostics Mechanical Engineer
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Join Commonwealth Fusion Systems as a Senior Diagnostics Mechanical Engineer in Devens. Lead SPARC diagnostic subsystems through design, test, and procurement. Requires 5+ years mechanical design experience and a relevant engineering degree.
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134000.00 - 205000.00 USD / Year
Commonwealth Fusion Systems
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Senior Project Engineer - Mechanical Systems
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Join a funded Series A robotics startup in Berkeley as Senior Project Engineer - Mechanical Systems. Own robotic deployments end to end, lead CAD design in Onshape, and enjoy equity, 401k matching, and unlimited PTO.
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125000.00 - 150000.00 USD / Year
Ambi Robotics
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Senior Mechanical Engineer (On-site)
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Join Standard Bots in Boston as a Senior Mechanical Engineer to own Bolt subsystem design from concept to production. Requires 5+ years electromechanical experience, SolidWorks, DFM, and FEA skills.
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Standard Bots
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Senior Avionics Mechanical Engineer
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Senior Avionics Mechanical Engineer to own space radio enclosure design end to end in Los Angeles. Requires 6+ years mechanical design, expert CAD/GD&T, thermal and structural FEA for vacuum and launch. Hands-on flight qualification ownership.
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AnySignal
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Senior Mechanical Engineer
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Aescape seeks a Senior Mechanical Engineer in New York to own mechanical subsystems for AI-powered robotics, from concept to production. Requires 5+ years, SolidWorks, FEA, and manufacturing expertise.
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Aescape
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Senior Mechanical Engineer
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Senior Mechanical Engineer to design marine electromechanical hardware for Smartmast systems in harsh outdoor environments. Requires 5+ years in marine or outdoor electronics design, strong CAD skills, and production-ready hardware expertise. Primarily remote with occasional travel.
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Quartermaster
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Senior Mechanical Engineer
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Senior Mechanical Engineer role in Fremont, CA owning mechanical design end to end - from CAD and tolerance analysis through manufacturing, testing, and hands-on hardware repair. Requires 5+ years shipping physical products to production.
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Triumph
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Senior Mechanical Engineer, Systems Integration
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Lead aircraft systems integration at Shield AI in Seattle. Requires 5+ years in aerospace or defense, advanced CAD and PLM expertise, and proven mechanical integration leadership from concept to production.
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140000.00 - 200000.00 USD / Year
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Shield AI
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Senior Mechanical Engineer (Manufacturing Test)
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WHOOP seeks a Senior Mechanical Engineer in Boston to design and deploy manufacturing test fixtures for wearable products. Requires 5+ years in mechanical design, SolidWorks proficiency, GD&T, and collaboration with contract manufacturers.
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Whoop
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Senior Mechanical Engineer
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Senior Mechanical Engineer to own wearable product design from concept to mass production in NYC. Requires 7+ years consumer electronics experience, strong 3D CAD skills, and DFM/DFA expertise.
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Sandbar
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Senior Mechanical Engineer
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Eight Sleep seeks a Senior Mechanical Engineer in San Francisco to design electromechanical sleep systems. Requires 3+ years consumer product design, CAD proficiency, DFM/DFA expertise, and travel to China.
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Eight Sleep
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Senior Mechanical Engineer, NPI
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Lead mechanical design for innovative consumer products at Cricut in South Jordan. Requires 5+ years experience, 3D CAD proficiency (CREO preferred), and expertise in injection molded plastics and electro-mechanical systems.
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Cricut
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Senior Staff Mechanical Engineer (On-site)
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Lead mechanical architecture for Bolt, an autonomous mobile manipulation platform in Boston. Requires 10+ years in product design, SolidWorks mastery, and NPI leadership. Shape robotics automation from concept to certified fleet.
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Standard Bots
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Senior Mechanical Engineer
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Boston Engineering seeks a Senior Mechanical Engineer in Waltham, MA to design innovative electromechanical products from concept to production. Requires 8-10+ years in new product development, Creo/SolidWorks, and DFM expertise. Onsite role.
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Boston Engineering Corporation
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Senior Mechanical Engineer
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Lead design of advanced R&D equipment for thin film processing at Commonwealth Fusion Systems in Milpitas. Requires 8+ years in mechanical design, 3D modeling (SolidWorks/NX), FEA tools, and team leadership.
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146000.00 - 210000.00 USD / Year
Commonwealth Fusion Systems
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Senior Staff Mechanical Engineer
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Lead mechanical engineering for satellite and aerospace systems at CesiumAstro in El Segundo. Requires 12-15 years experience in structural analysis, CAD, and product design. U.S. citizenship required.
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165000.00 - 199000.00 USD / Year
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CesiumAstro
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Senior Staff Mechanical Engineer
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Senior Staff Mechanical Engineer role in Austin, TX, leading complex mechanical design, structural analysis, and testing for satellite and aerospace communication systems. Requires 12-15 years experience and U.S. citizenship or authorization.
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CesiumAstro
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Senior Mechanical Engineer
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Senior Mechanical Engineer role in Westminster for U.S. citizens or protected individuals. Requires 5-8 years experience with CAD, structural analysis, GD&T, and mechanical design. Join CesiumAstro's dynamic space technology team.
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113000.00 - 136000.00 USD / Year
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CesiumAstro
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Senior Staff Engineer, Mechanical & Actuated Systems (R6307)
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Shield AI seeks a Senior Staff Engineer in Seattle to design electro-mechanical and hydro-mechanical mechanisms for autonomous aircraft. Requires 10+ years of mechanism design experience, strong CAD and FEA skills, and a passion for defense technology.
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200000.00 - 310000.00 USD / Year
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Shield AI
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About the Senior Mechanical Engineer role

Discover and apply for Senior Mechanical Engineer jobs, a pivotal career path for experienced professionals who drive innovation and ensure the integrity of complex mechanical systems. A Senior Mechanical Engineer is a seasoned expert responsible for the entire lifecycle of mechanical components and systems, from conceptual design and analysis to implementation, quality assurance, and project leadership. These roles are fundamental across diverse industries, including energy, manufacturing, aerospace, automotive, and industrial processing, where they translate theoretical principles into robust, real-world solutions.

Professionals in these senior positions typically undertake a wide array of critical responsibilities. They lead the design and development of sophisticated mechanical systems, performing detailed calculations, simulations, and analyses to ensure functionality, safety, and efficiency. A core aspect of the role involves creating and reviewing technical documentation, specifications, and engineering drawings. They often oversee project timelines, manage budgets, and coordinate multidisciplinary teams, acting as the technical authority. Senior Mechanical Engineers are also heavily involved in problem-solving, troubleshooting design or operational issues, and implementing continuous improvement processes. In many positions, they ensure strict compliance with industry standards, codes, and regulatory requirements, sometimes specializing in Quality Assurance/Quality Control (QA/QC) to oversee inspections, testing protocols, and material verification.

The typical requirements for Senior Mechanical Engineer jobs reflect the high level of expertise and leadership demanded. Candidates almost universally need a Bachelor’s or advanced degree in Mechanical Engineering or a closely related field. A proven track record, often 5-10 years of progressive experience, is essential, demonstrating a deep understanding of mechanical engineering principles, materials science, thermodynamics, and fluid mechanics. Proficiency in industry-standard software like CAD (e.g., AutoCAD, SolidWorks), CAE, and project management tools is expected. Strong analytical skills, meticulous attention to detail, and the ability to manage multiple complex projects are crucial. Excellent communication and interpersonal skills are paramount for liaising with stakeholders, mentoring junior engineers, and presenting technical information clearly. A commitment to professional development, often including relevant certifications, and a focus on safety and sustainability are hallmarks of successful candidates.

Exploring Senior Mechanical Engineer jobs opens doors to roles where technical mastery meets strategic leadership. These professionals are the cornerstone of engineering projects, ensuring that mechanical systems are not only designed to specification but are also reliable, efficient, and innovative. Whether focusing on design, project management, proposals, or quality control, senior engineers play an indispensable role in advancing technology and infrastructure, making this a highly sought-after and rewarding career for experienced engineering talent.