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243 prototype engineer jobs at 144 companies in Fairfield, CA

2d
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frog Product Prototype Developer (Fixed Term)
San Francisco or Boulder
$72k-$135k/yr OnsiteFull Time, Contract
Capgemini
CapgeminiEuronext Paris: CAP: Provides global IT consulting and digital transformation services.
3+ YOEBS in Mechanical Engineering or equivalent hands-on experience; 3+ years fabrication/prototyping with softgoods or consumer products; 3D CAD, DFM/DFA, FAI, ASME Y14.5 familiarity; portfolio encouraged.
3D CAD, DFM, DFA, First Article Inspection (FAI), ASME Y14.5
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2w
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Prototype & Test Engineering Intern, New Product Development
San Francisco, California, United States
$30-$35/hr OnsiteInternship, Full Time
Eight Sleep
Eight Sleep: Develops smart mattresses and temperature-regulated sleep technology.
Engineering background with hands-on prototyping and troubleshooting of electromechanical systems; experience with multimeters, oscilloscopes, command-line utilities; BS (or expected BS) in engineering required, MS preferred; ability to lift up to 50 lbs.
Multimeter, Oscilloscope, Command-line utilities, Claude
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3mo
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Robot Prototype Technician
San Francisco, California, United States
OnsiteFull Time
Physical Intelligence
Physical Intelligence: Creating foundation models for general-purpose robot intelligence.
2+ YOE2+ years prototyping technician experience; electromechanical assembly; soldering; CAD; diagnostics; teamwork.
SOLIDWORKS, Onshape, Soldering, Wiring, Oscilloscopes, Multimeters, PLCs
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1w
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Mechanical Engineer
San Francisco, California, United States
$110k-$140k/yr OnsiteFull Time
Glacier
Glacier: Builds AI-powered robots for automated sorting in recycling facilities.
3+ YOEBS/MS in Mechanical Engineering, 3+ years engineering experience, structural design and FEA, CAD (Onshape/SolidWorks), DFM/GD&T, hands-on prototyping and manufacturing experience.
Onshape, SolidWorks, FEA, GD&T
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2mo
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Founding Design Engineer
San Francisco, California, United States
$160k-$200k/yr RemoteFull Time
Lunon
Lunon: AI-native platform providing automated consulting and diligence services.
Strong design and engineering skills; proven ability to prototype and ship; excellent communication and empathy.
Framer, Figma, Claude Design, Claude Code, Cursor
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2mo
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Senior Mechanical Engineer
Oakland, California, United States
$70k-$150k/yr OnsiteFull Time
Arxlight
Arxlight: Developing next-generation autonomous drones for security and defense applications.
4+ YOEBachelor's in Mechanical Engineering with 4+ years of experience; CAD proficiency; design, analysis, and prototyping; strong problem-solving and communication.
CAD, SolidWorks, AutoCAD, Creo, FEA, CFD
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3mo
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Mechanical Engineer
San Francisco, California, United States
OnsiteFull Time
Medra
Medra: Builds autonomous robots and AI for scientific research.
BS/MS in Mechanical Engineering or related, hands-on hardware prototyping, CAD design, testing, and production experience; on-site in San Francisco; flexible, hands-on contributor.
CAD, PLM, Prototyping, Manufacturing
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1mo
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Sr. Mechanical Engineer
Fremont, California, United States
OnsiteFull Time
Anyware Robotics
Anyware Robotics: Develops autonomous mobile robots for warehouse and logistics automation.
2+ YOEBachelor's in Mechanical/Mechatronics Engineering, 2+ years industry experience, SolidWorks and GD&T experience, hands-on prototyping and manufacturing knowledge, leadership of junior engineers, Mandarin preferred.
SolidWorks
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1mo
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Hardware Systems Engineer
Cambridge or San Francisco
$105k-$150k/yr OnsiteFull Time
Lumafield
Lumafield: Accessible industrial CT scanners and cloud-based analysis software
3+ YOEHands-on electro-mechanical hardware engineer with electronics, embedded firmware, and system integration experience; capable of bringing prototypes to shipping.
MCAD, ECAD, Embedded Firmware, System Architecture, PCB Design, C/C++
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1w
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Thermal Engineer
San Francisco, California, United States
OnsiteFull Time
Orbital
Orbital: Builds AI-powered data center hardware and advanced materials.
5+ YOEBachelor's in mechanical/chemical engineering,5+ years experience in single/two-phase heat transfer or refrigeration,thermodynamic analysis,hands-on prototyping,lab testing,CAD and simulation experience.
CFD, FEA, CAD
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4w
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Mechanical Engineer
Davis, California, United States
$100k-$110k/yr OnsiteFull Time
Terabase Energy
Terabase Energy: Digital and automation platform for utility-scale solar plants.
2+ YOEBS in Mechanical Engineering, 2+ years relevant experience, proficiency in 3D CAD (SolidWorks preferred) and GD&T, familiarity with manufacturing processes and motion components, hands-on prototyping and strong communication.
SolidWorks, SolidWorks Simulation, ANSYS, ABAQUS, CAD, FMEA
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1mo
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Mechanical Engineer
Fremont, California, United States
$110k-$130k/yr OnsiteFull Time
Nova
NovaNASDAQ: NVMI: Provider of metrology and process control solutions for semiconductors.
1+ YOEBS in Mechanical Engineering, 1-3+ years in semiconductor equipment; SolidWorks and SolidWorks PDM; GD&T, FEA, high-vacuum and precision optics experience; prototype, test, and supplier management.
SolidWorks, SolidWorks PDM, FEA, GD&T
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1mo
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Manufacturing Engineer
Union City, California, United States
$82k-$90k/yr OnsiteFull Time
Mizuho OSI
Mizuho OSI: Designs and manufactures specialty surgical tables and positioning systems.
0+ YOEBachelor's in Mechanical, Electrical, or Industrial Engineering; 0-2 years experience; knowledge of manufacturing processes, lean methods, prototyping/troubleshooting, test protocols, SolidWorks and Microsoft Office; ability to travel to vendor sites.
SolidWorks, Windows, Microsoft Outlook, Microsoft Word, Microsoft Excel, Microsoft PowerPoint
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1mo
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Mechanical Engineer II
Petaluma, California, United States
$82k-$116k/yr OnsiteFull Time
AeroVironment
AeroVironmentNASDAQ: AVAV: Designs and manufactures unmanned aircraft and tactical missile systems.
2+ YOEBachelors in Mechanical or Aerospace Engineering (or equivalent), 2+ years designing complex mechanical/electro-mechanical systems, SolidWorks/ANSYS proficiency, prototyping and ASME drawing standards experience.
SolidWorks, SolidWorks Simulation, ANSYS, SolidWorks EPDM, Microsoft Office, 3D printing
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1w
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Power Electronics Engineer
Petaluma or Austin
$80k-$189k/yr OnsiteFull Time
Enphase Energy
Enphase EnergyNASDAQ: ENPH: Manufacturer of microinverter-based solar and energy storage systems.
1+ YOEM.S. or Ph.D. in Electrical Engineering, hands-on power electronics design experience, familiarity with advanced power semiconductors and magnetics, ability to translate simulation to prototypes.
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23h
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Staff Mechanical Engineer, Integration
Berkeley, California, United States
$148k-$194k/yr OnsiteFull Time
Form Energy
Form Energy: Developing multi-day batteries for grid-scale energy storage.
8+ YOEBachelor's in Mechanical Engineering (or related) with 8+ years mechanical design experience; prototyping, thermal modeling, manufacturing optimization, vendor leadership, and interdisciplinary integration experience.
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2mo
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Mechanical Engineer (Hands Team)
San Francisco, California, United States
OnsiteFull Time
Foundation Robotics
Foundation Robotics: Building general-purpose humanoid robots for industry and defense.
Strong mechanical engineering foundation; hands-on robotics experience; experience with complex assemblies, manufacturing processes; tendon-driven systems familiarity; sensor integration; prototyping.
CNC machining, Injection molding, Additive manufacturing, Stamping, Mechatronics, Tendon-driven systems, Sensor integration
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1mo
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Senior MEP Engineer
Hayward, California, United States
$120k-$165k/yr OnsiteFull Time
Veev
VeevNYSE: LEN: Manufacturer of prefabricated panel systems for residential home construction.
7+ YOEBachelor's degree in engineering, 7+ years MEP design/engineering/construction experience, multidisciplinary MEP knowledge (HVAC, electrical, plumbing, fire/life safety), practical problem solving, DFMA and prototyping experience, strong cross-functional communication.
Revit, ACC/BIM 360, SolidWorks, SolidWorks PDM
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2mo
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Product Design Mechanical Engineer
San Francisco, California, United States
HybridFull Time
Meter
Meter: Builds and operates full-stack enterprise networking infrastructure.
Mechanical engineering expertise with hardware product experience; proficient in CAD; strong cross-functional collaboration; prototyping and testing.
Creo, OnShape
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1mo
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Electrical Engineer II
Fremont, California, United States
$100k-$150k/yr OnsiteFull Time
Velo3D
Velo3DNASDAQ: VELO: Manufacturer of advanced metal 3D printers and software.
2+ YOEBachelor's in Electrical Engineering, 2+ years electrical system design or manufacturing experience, ECAD and Mechanical CAD proficiency, hands-on prototyping and testing, familiarity with PLCs, PLM/PDM tools, and manufacturing support.
AutoCAD Electrical, SolidWorks Electrical, SolidWorks, AutoCAD, Propel, Arena, Agile, SolidWorks PDM, PLC
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