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45 materials testing jobs at 33 companies in Napa, CA

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Construction Materials Testing Technician Level I/II
Hayward or Stockton or Fresno
$25-$33/hr FieldFull Time
Kleinfelder
Kleinfelder: Professional engineering, design, and construction management services.
1+ YOEAbility to perform field and lab construction materials testing, lift up to 50+ lbs, operate testing equipment, hold multiple field certifications (ACI, Caltrans, NICET, etc.), and travel throughout Northern California.
ultrasonic non-destructive testing machine, concrete cylinder press
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2mo
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Materials Test Engineer II
Hayward, California, United States
$75k/yr OnsiteFull Time
TransPak: A packaging testing and materials testing that provides lab services and product testing.
3+ YOEBS in Metrology/Packaging/Mechanical or Industrial Eng; 3-5 years in packaging/test lab; able to read protocols and specifications (ASTM/ISTA/IEC/MIL-STD); strong data analysis and communication.
Laboratory testing equipment, CNC machine, Drill press, SOPs, General computer literacy
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1mo
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Engineering Technician - Materials
South San Francisco, California, United States
$34-$57/hr OnsiteFull Time
Neuralink
Neuralink: Developing implantable brain-computer interfaces to restore human capabilities.
Hands-on lab/prototyping/test experience, familiarity with data-collection instrumentation, strong technical aptitude, and organized approach to high-throughput reliability testing.
Python, C++, Arduino, thermocouples, cameras, microcontroller
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Postdoctoral Researcher – Battery Materials & Electrochemical Energy Storage
Berkeley, California, United States
$84k-$94k/yr OnsiteFull Time
Lawrence Berkeley National Laboratory
Lawrence Berkeley National Laboratory: Conducts multidisciplinary scientific research for the U.S. Department of Energy.
Ph.D. in chemistry, chemical engineering, materials science or related; hands-on battery materials synthesis, cell assembly, electrochemical testing, and structural characterization; strong record of publication and data management.
Python, MATLAB, X-ray diffraction, electron microscopy, X-ray photoelectron spectroscopy (XPS), glovebox, galvanostatic cycling, impedance spectroscopy, synchrotron
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Postdoctoral Researcher – Battery Materials & Electrochemical Energy Storage
Berkeley, California, United States
$84k-$94k/yr OnsiteFull Time
Lawrence Berkeley National Laboratory
Lawrence Berkeley National Laboratory: Conducts scientific research to address global challenges.
PhD in chemistry, chemical engineering, materials science or related; hands-on experience with battery material synthesis, cell assembly, electrochemical testing, glovebox operation, and structural characterization; strong communication and data management skills.
Python, MATLAB, glovebox, X-ray diffraction, electron microscopy, X-ray photoelectron spectroscopy, synchrotron
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Project Manager - QAQC
San Francisco, California, United States
HybridFull Time
Enertis Applus+
Enertis Applus+: Global engineering, consulting, and quality control for renewable energy.
5+ YOEBachelor’s degree in Materials Sciences/Engineering; 5+ years in process/materials/manufacturing engineering; QA/QC experience; factory audits and testing; travel 50% domestic.
Quality assurance, Process validation, Testing, Documentation
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Staff Engineer, Anode R&D
Hayward, California, United States
$125k-$153k/yr OnsiteFull Time
Blue Current
Blue Current: Develops silicon solid-state batteries for mobility and stationary storage.
3+ YOEPhD with 3+ years or MS with 6+ years or BS with 8+ years in materials/chemical engineering related to batteries; hands-on solid-state battery experience; expertise in anode materials and cell testing.
SEM, XRD, TGA, FTIR, DSC, EIS, CV, GITT
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Elementary PE Teacher (TK-8th)
Hayward, California, United States
OnsitePart Time
KEY Academy
KEY Academy: Public K-8 charter school located in Hayward, California.
Preliminary/Clear Single Subject Credential; application materials; Fingerprints, Livescan, TB test; Physical Education credential.
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PBF Martinez
Martinez, California, United States
$26-$31/hr OnsiteFull Time
The Brock Group
The Brock Group: Provides specialty craft and maintenance services for industrial facilities.
Operate and monitor plant equipment, load trucks, perform material testing and sample collection; basic computer and organizational skills.
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Nitrous Oxide Plant Operator - Richmond, CA
Richmond, California, United States
$43/hr OnsiteFull Time
Matheson
MathesonTokyo Stock Exchange: 4091: Supplying industrial, medical, and specialty gases and handling equipment.
Operate nitrous oxide production facility, test and release materials, monitor processes, maintain records, ensure safety and regulatory compliance.
Gas chromatography, Analytical methods, Instruments and test equipment, Basic computer skills
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Part Time - EOP&S/CARE Counselor
Woodland, California, United States
$2k-$3k/mo OnsitePart Time
Yuba Community College District
Yuba Community College District: Public community college district serving Northern California.
Master's in counseling or related field (or equivalent), specific semester-unit coursework or practicum in EOPS-related populations, TB test and fingerprint clearance, submission of transcripts and application materials.
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Quality Control Technician
Pleasanton, California, United States
$30-$36/hr OnsiteFull Time
Vulcan Materials Company
Vulcan Materials CompanyNYSE: VMC: Produces construction aggregates, asphalt, and ready-mix concrete.
Prior materials testing experience preferred; knowledge of construction/mining hazards, good math skills, and proficiency with computerized systems and Microsoft Office, Google, and Oracle Business Environment.
Microsoft Office Suite, Google, Oracle Business Environment
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Mechanical Design Engineer - Power Systems
South San Francisco, California, United States
$100k-$125k/yr OnsiteFull Time
Lightship
Lightship: Manufacturer of aerodynamic all-electric recreational travel trailers.
2+ YOEB.S. in engineering, 2+ years design engineering experience, CAD and BOM ownership, DFMEA, prototype building, test support, materials selection, strong communication and problem-solving.
CATIA (3DX)
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Assistant High School Athletic Director- Leroy Greene Academy -2026-2027
Sacramento, California, United States
OnsitePart Time
Leroy Greene Academy
Leroy Greene Academy: A public 6-12 charter school providing rigorous academic programs.
2+ YOETwo years coaching experience; strong organizational and communication skills; CPR/First Aid; TB test; fingerprinting; three references; completion of required materials before coaching begins.
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Logistics Specialist
South San Francisco or Half Moon Bay
OnsiteFull Time
Zipline
Zipline: Operates an autonomous drone delivery system for medical supplies.
2+ YOE2+ years in inventory control, warehouse or logistics; experience with ERP/WMS; material handling and reverse-logistics knowledge; strong communication and ability to work onsite in test/warehouse environments.
ERP, WMS
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1mo
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Senior Chemical Engineer
Berkeley, California, United States
$112k-$140k/yr OnsiteFull Time
Form Energy
Form Energy: Developing multi-day batteries for grid-scale energy storage.
3+ YOEPhD or MS with 3+ years experience in chemistry/chemical engineering/materials science; expertise in fluid mechanics, fluid handling, sensor selection, modeling, verification testing, and defining engineering requirements.
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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
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Dock Worker - San Leandro, CA
San Leandro, California, United States
$26-$29/hr OnsiteFull Time
AAA Cooper Transportation
AAA Cooper Transportation: Regional and national less-than-truckload freight transportation carrier.
Must be 18+, complete drug screen and background check, finish new-hire training and forklift driving test, read/write/speak English, and perform physical material-handling tasks.
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Instructional Aide - Elementary School (26-27)
San Francisco, California, United States
$20-$24/hr OnsiteFull Time
KIPP Public Schools Northern California
KIPP Public Schools Northern California: Operates a network of free public charter schools.
Supports small-group and one-to-one student instruction, prepares materials, implements behavior plans, and assists with testing accommodations; requires high school diploma or equivalent and demonstrated experience working with students.
Google Classroom, Hangout, Google Docs, Google Sheets, Google Slides, Zoom, Nearpod
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1mo
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Geotechnical Soils Technician
Oakland, California, United States
FieldFull Time
Atlas Technical Consultants
Atlas Technical Consultants: Provider of infrastructure and environmental engineering and testing services.
2+ YOE2+ years construction materials testing or geotechnical field experience; high school diploma/GED; valid driver's license; ability to perform physical field work, collect data, and document results.
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