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Mechanical Engineer United States Jobs (On-site work)

360 Job Offers

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Senior Mechanical Engineer
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Clera
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Mechanical Engineer - Enclosure Design
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Swarm Aero
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Mechanical Engineer
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Obvio
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TCA Mechanical Design Engineer Level 1
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Cowboy Space Corp. seeks a TCA Mechanical Design Engineer Level 1 in the US to own rocket engine hardware lifecycle from design through flight qualification. Requires 1+ years of mechanical design experience, 3D CAD proficiency, and DFM/DFA expertise.
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Cowboy Space Corp.
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Principal Mechanical Engineer
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Lead mechanical architecture for autonomous directed-energy counter-drone systems in San Francisco. Requires 10+ years shipping complex hardware from prototype to production, strong CAD and FEA skills, and cross-disciplinary expertise. Salary $235K-$305K.
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Clera
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Sr. Staff Engineer, Supply Chain - Mechanical Commodities (R6524)
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Shield AI seeks a Sr. Staff Engineer in Seattle to lead supplier development for precision-machined mechanical commodities. Requires 10+ years in aerospace/defense manufacturing and expertise in CNC machining and structural fabrication.
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210000.00 - 315000.00 USD / Year
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Shield AI
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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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Mechanical Design Engineer Intern
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Join Matic as a Mechanical Design Engineer Intern in Menlo Park and help revolutionize home robotics. Use SolidWorks and hands-on prototyping to design parts for mass production in a fast-paced startup.
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Matic
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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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Mechanical Engineer
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Xona seeks a Mechanical Engineer in Burlingame to own spacecraft hardware from design through build and test. Requires 3+ years of mechanical development experience, SolidWorks proficiency, and strong GD&T skills.
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Xona Space Systems
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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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Mechanical Engineer Co-op
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Join Lydian in Boston as a Mechanical Engineer Co-op to design catalyst-loading equipment for sustainable aviation fuel. Requires SolidWorks skills, mechatronics experience, and hands-on prototyping. Paid internship with mentorship.
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Lydian
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Mechanical Hardware Test & Validation Engineer (All Levels)
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ALSO seeks a Mechanical Hardware Test & Validation Engineer in Palo Alto to validate low voltage electromechanical modules for light EVs. Requires hands-on testing experience, DAQ and sensor skills, and Python or MATLAB proficiency.
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ALSO
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Mechanical Design Engineer
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Join Boston Materials as a Mechanical Design Engineer in Billerica, MA. Recent ME grads (0-3 yrs) with CAD, GD&T, and thermal/mechanics fundamentals wanted. Great benefits, unlimited PTO.
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80000.00 - 120000.00 USD / Year
Boston Materials
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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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Mechanical Engineer
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Kovari seeks a Mechanical Engineer in San Francisco to own robot mechanical design from actuators to field-ready assembly. Requires strong CAD, fabrication skills, and hands-on prototyping mindset.
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Kovari
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Mechanical Engineer
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Red 6 seeks a Mechanical Engineer in Louisville to design precision AR training systems. Requires 2-5+ years in product design, electromechanical or optical systems, and strong DFM/DFA skills. Full benefits included.
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Red 6
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About the Mechanical Engineer role

Explore a world of opportunity in mechanical engineer jobs, a cornerstone profession that drives innovation across virtually every industry. Mechanical engineers are the creative and analytical force behind the design, development, and manufacturing of mechanical systems and devices. From the smallest micro-sensors to massive industrial machinery, their work is fundamental to technological progress. If you possess a blend of analytical prowess, creative problem-solving, and practical skills, a career in mechanical engineering offers a diverse and rewarding path.

Professionals in this field are typically responsible for the entire product lifecycle. This begins with conceptualization and design, where they use principles of mechanics, thermodynamics, and materials science to create viable solutions. A significant part of their role involves detailed computer-aided design (CAD) and 3D modeling to visualize components and assemblies. They then progress to analysis, using sophisticated software for simulation, such as Finite Element Analysis (FEA) for structural integrity and Computational Fluid Dynamics (CFD) for thermal and fluid flow behavior. Prototyping, testing, and data analysis follow, ensuring the product meets all specifications, safety standards, and performance criteria. Furthermore, mechanical engineers are often tasked with project management duties, including budgeting, timeline adherence, and cross-functional collaboration with other engineering disciplines, marketing teams, and manufacturing personnel.

The day-to-day responsibilities in mechanical engineer jobs are vast but commonly include researching and developing new products, creating and refining technical drawings and schematics, selecting appropriate materials and manufacturing processes, conducting rigorous tests to evaluate design performance, and preparing detailed documentation and reports. They also troubleshoot design or operational flaws and implement improvements to existing systems.

To succeed, candidates generally require a bachelor’s degree in mechanical engineering or a closely related field. Strong proficiency in CAD software (like SolidWorks, AutoCAD, or CATIA) and analytical tools is a fundamental expectation. Essential skills include a deep understanding of core engineering principles, excellent problem-solving abilities, and meticulous attention to detail. Soft skills are equally critical; effective written and verbal communication is vital for collaborating with teams and explaining complex concepts to non-engineers. Project management, teamwork, and a commitment to continuous learning in a rapidly evolving technological landscape are also highly valued traits.

Whether your interest lies in robotics, aerospace, energy, automotive, consumer products, or biomedical devices, mechanical engineer jobs provide a platform to turn ideas into tangible, functioning reality. Discover your next career move and shape the future of technology.