12 prototype engineer jobs at 10 companies in Escalon, CA
6d
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Staff Engineer - Mechanical
Pleasanton, California, United States
$142k-$177k/yr OnsiteFull Time
8+ YOE8+ years in Aerospace & Defense R&D, Bachelor’s in Mechanical Engineering, U.S. citizen or lawful permanent resident, 5+ years SolidWorks/CAD, experience with DFM/DFA, GD&T and ANSI Y14.5, prototype-to-production experience, comfortable in lab.
SolidWorks, SolidWorks PDM, FEA, CFD, PLM
4d
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Supercapacitor Cell Engineer (69870)
Pleasanton, California, United States
$117k-$172k/yr OnsiteFull Time
5+ YOEBachelor's or Master's in engineering/materials, 5+ years manufacturing/process development experience, hands-on cell prototyping and scale-up, ability to travel up to 20%, U.S. work authorization required.
DFM, GD&T
4w
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Principal Mechanical Design Engineer
Livermore, California, United States
$111k-$145k/yr OnsiteFull Time
5+ YOEMechanical design engineer with minimum 5 years' related experience (or equivalent degree/experience), strong 3D CAD skills, GD&T and tolerance knowledge, hands-on prototyping, metrology, and cross-functional troubleshooting.
Autodesk AutoCAD, SolidWorks, SolidWorks PDM
3w
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Senior Mechanical Engineer - Active Clearance Required
Livermore, California, United States
$176k-$267k/yr HybridFull Time
Bachelor's degree in mechanical engineering or equivalent, advanced mechanical design and prototype experience, project leadership and mentoring, strong communication and problem-solving, active DOE Q or Top Secret clearance required.
4d
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Design Engineer - 9541
Stockton, California, United States
$78k-$100k/yr OnsiteFull Time
MacLean Power Systems: Manufactures engineered components for electrical and telecommunications infrastructure.
2+ YOEBachelor's degree and 2+ years experience; proficiency with CAD; ability to design, model, test prototypes; knowledge of materials, production criteria, and 5S; communication and leadership skills.
CAD
4d
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Design Engineer - 9541
Stockton, California, United States
$78k-$100k/yr OnsiteFull Time
2+ YOEBachelor's degree and 2–4 years experience; ability to design, model, test prototypes, create drawings, select materials, and use CAD; strong technical, planning and communication skills.
CAD
1mo
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Principal Hardware Engineer - Fluidics - Pleasanton, CA
Pleasanton or United States
$250k-$270k/yr OnsiteFull Time
15+ YOEBachelor's in engineering required, 15+ years developing fluidic/mechatronic/control systems for regulated products, expertise in fluid dynamics, closed-loop control, prototyping, embedded software (C/C++, Python), medical device standards (IEC 60601, ISO 13485).
C, C++, Python
3w
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Sr. Engineer, R&D - Pleasanton, CA
Pleasanton, California, United States
$120k-$135k/yr OnsiteFull Time
5+ YOEMaster's preferred (Bachelor's required) in Mechanical/Biomedical Engineering or related, 5+ years experience, medical device R&D experience preferred, prototyping (CNC, 3D printing), Solidworks, knowledge of FDA and ISO 13485.
CNC, 3D printing, Solidworks
1w
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Senior Electro-Mechanical Engineer
Livermore, California, United States
$150k/yr HybridFull Time
5+ YOEBachelor's in mechanical or related field,5+ years electro-mechanical product experience,SolidWorks proficiency,motor/actuator integration,prototyping,manufacturing-ready drawings and GD&T.
SolidWorks, FEA, CFD
6d
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Associate Mechanical Engineer
Stockton, California, United States
$21-$22/hr OnsiteInternship
MacLean Power Systems: Manufactures engineered components for electrical and telecommunications infrastructure.
Bachelor's in mechanical engineering (or near-graduate). Hands-on mechanical design, SolidWorks/AutoCAD familiarity, prototyping, testing, fabrication collaboration, strong communication and problem-solving.
SolidWorks, AutoCAD
1w
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Design Drafter – Mechanical Designer (NWS 00928)
Livermore, California, United States
$43-$74/hr OnsiteFull Time
Must be U.S. citizen, 18+, able to pass medical, drug screen, background investigation and DOE Q clearance; AS degree or equivalent experience; advanced 3D CAD and tolerance analysis skills; experience with design, fabrication, and prototyping.
PTC Creo, Pro-E Mechanical/Creo Simulate, PTC Windchill, Microsoft Word, Microsoft Excel, Microsoft PowerPoint
1mo
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R&D Packaging Scientist 1 (Recent Grad Starting in 2026)
Pleasanton, California, United States
HybridFull Time
Recent graduate (Dec 2025–Aug 2026) with a 3.0+ GPA in packaging, materials, or mechanical engineering; knowledge of ASTM testing; experience with ArtiosCAD and TOPS; able to work in a lab and prototype samples.
ArtiosCAD, TOPS