13 prototype jobs at 12 companies in Modesto, CA

1mo
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Senior/Principal Prototyping Technologist (Machinist) - Manufacturing Svc Pgm & Ops, Onsite
Livermore, California, United States
$89k-$172k/yr OnsiteFull Time
Sandia National Laboratories
Sandia National Laboratories: Conducts science and engineering research for national security.
8+ YOEHigh school diploma plus 8+ years related machining/prototyping experience; ability to obtain DOE Q-level security clearance; experience with CNC/CAM programming, 5-axis machining, CMM operation, CREO NC, wire EDM, and prototype fabrication.
CREO NC, CAD/CAM, CNC, CAM, 5-axis CNC, 6-way indexing CMM, wire EDM, EDM, milling machines, lathes, grinders, buffers, saws, routers, bead blaster
2mo
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Mechanical Systems Technician Associate V
Pleasanton, California, United States
$39-$53/hr OnsiteFull Time
Bio-Rad Laboratories
Bio-Rad LaboratoriesNYSE: BIO: Develops and manufactures products for life science research and diagnostics.
10+ YOEAssociate or equivalent engineering experience; 10+ years of professional experience; strong prototyping, machining, electrical, and troubleshooting skills; experience with regulated environments preferred.
CAD, Measurement equipment, Soldering, Electrical test equipment
1mo
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Senior/Principal Prototyping Technologist (Machinist) - Manufacturing Svc Pgm & Ops, Onsite
Livermore, California, United States
$89k-$172k/yr OnsiteFull Time
Sandia National Laboratories
Sandia National Laboratories: Federal research and development laboratory for national security.
8+ YOEHigh school diploma + 8+ years directly related machining/prototyping experience; ability to obtain DOE Q-level security clearance (U.S. citizenship required). CNC/CAM, CAD/CAM, CREO NC, 5-axis CNC, wire EDM, and CMM experience desired; ability to read drawings and recommend design-for-manufacturability changes.
CREO NC, CAD/CAM, CNC, CAM, wire EDM, CMM, milling machines, lathes, EDM machines, grinders, buffers, saws, routers, bead blaster
3d
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Senior Electro-Mechanical Engineer
Livermore, California, United States
$150k/yr HybridFull Time
HEN Technologies
HEN Technologies: Building an AI-powered intelligent ecosystem for fire suppression.
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
3w
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Senior Product Designer, Engagement
Alameda County or Contra Costa County or Marin County or Napa County or San Francisco County or San Mateo County or Santa Clara County or Solano County or Sonoma County or San Francisco
$188k-$212k/yr OnsiteFull Time
Discord
Discord: A platform providing voice, video, and text communication services.
5+ YOE5+ years designing consumer products, design lead experience, portfolio for desktop and mobile, highly proficient in Figma, prototyping tools, experience with design systems, strong communication and collaboration skills.
Figma, Protopie, Framer, Origami
4w
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R&D Packaging Scientist 1 (Recent Grad Starting in 2026)
Pleasanton, California, United States
HybridFull Time
Clorox
CloroxNew York Stock Exchange: CLX: Manufactures and markets consumer cleaning and wellness products.
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
1w
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Food Science Associate
Livermore, California, United States
OnsiteFull Time
Louis Dreyfus Company
Louis Dreyfus Company: Global merchant and processor of agricultural and food goods.
2+ YOEBachelor's in food science or related field with 2+ years (or Associate with 4+ years); experience characterizing proteins, prototyping, sensory evaluation, SOP and R&D reporting; LIMS/ELN and spreadsheet proficiency.
LIMS, ELN, AI tools, Microsoft Excel, Microsoft Word, Microsoft PowerPoint
2w
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Senior Mechanical Engineer - Active Clearance Required
Livermore, California, United States
$176k-$267k/yr HybridFull Time
Lawrence Livermore National Laboratory
Lawrence Livermore National Laboratory: Develops science and technology for United States national security.
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.
3w
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Principal Mechanical Design Engineer
Livermore, California, United States
$111k-$145k/yr OnsiteFull Time
FormFactor
FormFactorNASDAQ: FORM: Manufacturer of semiconductor test and measurement equipment.
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
2w
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Sr. Engineer, R&D - Pleasanton, CA
Pleasanton, California, United States
$120k-$135k/yr OnsiteFull Time
Getinge
GetingeNasdaq Stockholm: GETI B: Manufactures medical equipment for acute care and life sciences.
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
4d
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Design Drafter – Mechanical Designer (NWS 00928)
Livermore, California, United States
$43-$74/hr OnsiteFull Time
North Wind Group
North Wind Group: Provides engineering, construction, and environmental services to federal agencies.
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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Product Manager, Design
Pleasanton, California, United States
$105k-$125k/yr OnsiteFull Time
Vagaro
Vagaro: Cloud-based management platform for beauty and wellness businesses.
2+ YOE2+ years in product design/management or hybrid role; portfolio/case studies; proficiency with Figma and modern prototyping; fluent with AI tools across research/design; strong ownership, communication, and cross-functional collaboration skills.
Figma
1mo
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Principal Hardware Engineer - Fluidics - Pleasanton, CA
Pleasanton or United States
$250k-$270k/yr OnsiteFull Time
Calyxo
Calyxo: Develops vacuum-assisted devices for minimally invasive kidney stone removal
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