39 process engineer intern jobs at 32 companies in California

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Process Engineer (Intern)
Milpitas, California, United States
$30-$40/hr OnsiteInternship, Full Time
Six Sigma Microelectronics
Six Sigma Microelectronics: A stable, high-technology manufacturing focused on semiconductor processes and soldering of high-reliability ICs.
0+ YOEPursuing BS in Chemistry, Process/Materials/Mechanical Engineering or related; basic tools, root-cause analysis, DOE; strong problem-solving and communication; MS Office; teamwork.
MS Office, Caliper, Micrometer, Optical Comparator, Reticle, Toolmakers Microscope
3mo
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Senior Process Engineer, MSAT
Alameda, California, United States
$72-$89/hr OnsiteContract, Full Time
GeneFab
GeneFab: Specialized contract manufacturing for advanced cell and gene therapies.
6+ YOELead GMP implementation of internal platform processes for cell and gene therapy; tech transfer, regulatory support, and CMC documentation.
GMP, DoE, CMC, Regulatory documentation
1mo
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Process Safety Engineer (PSM)
Madrid or Alameda or United States or Germany or Portugal or Thailand or Australia
OnsiteFull Time
Rondo Energy
Rondo Energy: Manufactures thermal batteries for industrial zero-carbon heat delivery.
10+ YOEB.S. in engineering and ~10+ years process/process-safety experience; demonstrated HAZOP/PHA facilitation; multi-site/international PSM experience; IEC 61511 and functional safety practice; willing to travel 25–40%.
HAZOP, HAZID, LOPA, IEC 61511, API 754, FMEDA, SIL, PSSR, PSI, SIS
4d
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Process Engineering Intern, ESS
Burlingame, California, United States
$30/hr OnsiteInternship
Peak Energy
Peak Energy: Developing sodium-ion battery systems for utility-scale energy storage.
Pursuing a Bachelor's in engineering, knowledge of materials and battery components, strong problem-solving, communication and teamwork, hands-on manufacturing willingness; Six Sigma/Lean exposure preferred.
1mo
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Engineer intern
Simi Valley, California, United States
OnsiteMultiple Commitments Available
M Wave Design
M Wave Design: Designs and manufactures passive RF and microwave components.
Currently enrolled in an engineering or science program (BSME/BSEE in process or equivalent), US person required, ability to work with technical drawings, basic CAD (SolidWorks/AutoCAD) exposure, strong communication and teamwork skills.
SolidWorks, AutoCAD
2mo
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Intern, Optical Packaging Process
Milpitas, California, United States
$28-$47/hr OnsiteInternship
PsiQuantum
PsiQuantum: Builds fault-tolerant quantum computers using silicon photonics technology.
Pursuing a bachelor’s in engineering, physics, or materials science; detail-oriented; team player; internship or lab experience is a plus.
Microsoft Excel, SOP, DOE, data visualization
3w
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Manufacturing Engineer Intern
Santa Fe Springs, California, United States
$20/hr OnsitePart Time
RD Rubber Technology Corporation
RD Rubber Technology Corporation: Manufacturer of custom precision molded rubber components.
Internship requiring familiarity with engineering calculations, CAD modeling, prototyping, manufacturing processes, and the ability to prepare reports and support continuous improvement projects; hands-on manufacturing experience preferred.
CAD
1mo
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Process Engineering Internship (Fall 2026)
Los Angeles or Hawthorne or El Segundo
$30-$35/hr OnsiteFull Time, Internship
Freeform
Freeform: Deploys autonomous AI-powered metal 3D printing factories.
Currently pursuing a Bachelor's in materials science, physics, or engineering; experimental design and statistical data analysis experience; strong data analysis skills; experience with Python and/or MATLAB.
Python, MATLAB, R, JMP, Minitab
2mo
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Software Engineer Intern - Machine Learning Workflow
Santa Clara, California, United States
$20-$30/hr OnsiteInternship, Temporary
Halo Industries
Halo Industries: Manufactures silicon carbide wafers using laser-based slicing technology.
0+ YOEPursuing or recent graduate in software/CS/engineering; Python or C# experience; works with structured workflows and large datasets; able to debug issues and follow processes.
Python, C#, Git
1mo
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Flight Test Engineer Intern (Fall 2026)
South San Francisco, California, United States
$40/hr OnsiteFull Time, Internship
Zipline
Zipline: Operates an autonomous drone delivery system for medical supplies.
Must be at least a second-year undergraduate (or grad) in a relevant engineering/technical field; strong math/physics, experience with autonomous/robotic system integration and testing, data processing and visualization, and strong communication skills.
Python, DataBricks, SQL
3w
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Metallurgical Engineering Intern
Alameda, California, United States
$35-$45/hr OnsiteInternship
Solcoa
Solcoa: Produces carbon-zero rare earth metals by recycling industrial magnets.
Enrolled in BS/MS in metallurgical engineering, materials science, or related field; hands-on lab/furnace experience; exposure to high-temperature processing; strong documentation and safety focus; on-site availability.
ICP-OES, SEM-EDS, LECO O/N, Python, MATLAB, FactSage, HSC
1mo
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Mechanical Engineering Intern
Torrance, California, United States
$20-$25/hr OnsiteInternship
Hexagon
HexagonNasdaq Stockholm: HEXA B: Global leader in digital reality and autonomous technology solutions.
High school diploma or equivalent; pursuing BS in Mechanical Engineering preferred; CAD experience with CREO; knowledge of GD&T and tolerance analysis; ability to document designs and assist in product lifecycle processes.
CREO, GD&T, MRP (Syteline), Windchill
3mo
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Sr. Process Development Manager
Livermore, California, United States
$130k-$170k/yr OnsiteFull Time
Ferrotec
FerrotecTokyo Stock Exchange: 6890: Manufacturer of semiconductor equipment and thermal management solutions.
15+ YOE5+ MgmtLead R&D for thin-film deposition processes; manage scientists/engineers; international collaboration.
Thin Film Deposition, Sputtering, Evaporation, PLD, ALD, CVD, Profilometry, Ellipsometry, SEM, AFM, 4-point probe
2mo
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Intern, Manufacturing Chemistry
Aliso Viejo, California, United States
$21-$34/hr OnsiteInternship
MicroVention
MicroVention: Manufacturer of neurovascular medical devices for stroke treatment.
Working toward a Bachelor’s or Master’s in Mechanical/Biomedical Engineering or related; interest/experience in process development; coursework in statistics and tooling design; SolidWorks a plus; computer skills in Word, Excel, PowerPoint; mechanical aptitude.
SolidWorks, Microsoft Word, Microsoft Excel, Microsoft PowerPoint
2w
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Fall 2026 PhD Intern - Hardware Development Engineering
Fremont, California, United States
$42-$56/hr OnsiteInternship
Western Digital
Western DigitalNASDAQ: WDC: Design and manufacture data storage devices and systems.
Currently pursuing or recently completed PhD in engineering or core science; strong critical thinking, problem solving, and communication skills; ability to support photo process development, mask management, and execution of engineering projects.
1mo
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Algorithm Engineer
Milpitas, California, United States
$136k-$232k/yr OnsiteFull Time
KLA
KLANASDAQ: KLAC: Provides process control and yield management for semiconductor manufacturing.
0+ YOEExpertise in image processing and computer vision, strong math and software engineering skills, C++ and CUDA experience, PhD/MS preferred with relevant years of experience, ability to support deployments and occasional international travel.
C++, CUDA C++, GPU, GPU-accelerated computing
1mo
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ML Software Engineer Intern
San Jose, California, United States
OnsiteMultiple Commitments Available
SkyGig
SkyGig: Develops beamforming technology for high-speed wireless broadband communications.
Currently pursuing a CS/EE/Applied Math degree; strong Python; experience with PyTorch, TensorFlow, or scikit-learn; data processing with pandas/NumPy/SciPy; ML model evaluation; software engineering practices and collaboration skills.
Python, PyTorch, TensorFlow, scikit-learn, pandas, NumPy, SciPy
1w
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Quality Systems Engineer
Torrance, California, United States
$120k-$150k/yr OnsiteFull Time
Stellant Systems
Stellant Systems: Manufacturer of radio frequency and microwave amplification products.
5+ YOE5+ years quality or manufacturing engineering experience, AS9100 knowledge, lead auditor preferred, experience with corrective actions, internal audits, ECN processing, ESD program, and KPI/dashboard analytics (Power BI/Tableau).
Power BI, Tableau
2mo
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Software Engineer Intern - Generalist
Fremont, California, United States
$7k-$10k/mo OnsiteInternship
Pony.ai
Pony.aiNASDAQ: PONY: Develops autonomous driving technology and operates robotaxi services.
Pursuing BS/MS/PhD in CS or related field; strong C/C++ and Python skills; foundation in math and CS theory; experience with large data processing and real-time systems preferred.
C/C++, Python
2w
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Quality Systems Engineer
San Diego, California, United States
$79k-$102k/yr OnsiteFull Time
Kyocera
KyoceraTokyo Stock Exchange: 6971: Manufactures advanced ceramic components and high-tech electronic equipment.
Experience auditing quality systems, internal controls, and process improvements; strong analytical, communication, and problem‑solving skills; ability to prepare reports and assess risks.