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123 engineering internship jobs at 66 companies in Fontana, CA

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Additive Engineering Internship (Fall 2026)
Los Angeles or Hawthorne or El Segundo
$30-$35/hr OnsiteInternship
Freeform
Freeform: Deploys autonomous AI-powered metal 3D printing factories.
Currently enrolled in a bachelor’s in mechanical or aerospace engineering (ABET); hands-on design experience from internships or clubs; strong mechanical fundamentals. MATLAB scripting, metal additive/CNC experience, and advanced degrees preferred.
MATLAB, Design for Additive Manufacturing (DFAM), Design for Manufacturing (DFM), Geometric Dimensioning and Tolerancing (GD&T), CNC
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1mo
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Robotics Engineering Co-Op Internship
Los Angeles, California, United States
$25/hr OnsiteMultiple Commitments Available
Sorting Robotics
Sorting Robotics: Manufacturer of automated robotic systems for cannabis production.
Pursuing a degree in engineering/CS/robotics, basic robotic systems knowledge and programming (Python, C++), strong analytical and communication skills, teamwork, willingness to learn, proof of COVID-19 vaccination, authorized to work in the U.S.
Python, C++
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1mo
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Construction Engineering Internship (Texas/Arizona/Florida/California) - Austin Commercial
Dallas-Fort Worth or Austin or Houston or Phoenix or Orlando or Tampa or Los Angeles
OnsiteMultiple Commitments Available
Austin Industrial
Austin Industrial: Construction and maintenance services for industrial facilities.
Seeking interns for paid construction engineering internships; duties include processing submittals, RFIs, field layout with survey instruments, documenting drawings and supporting quality/safety tasks.
level, theodolite, total station
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1w
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Return Engineering Internship, Summer 2027
Irvine or Draper or Salt Lake City
$54k-$72k/yr OnsiteFull Time
Edwards Lifesciences
Edwards LifesciencesNYSE: EW: Designs and manufactures medical devices for structural heart disease.
Currently enrolled university student (graduating Dec 2027 or later), available full-time May/June–Aug 2027, comfortable in lab work, GPA 3.0+, no visa sponsorship accepted.
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2mo
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Mechanical Engineering Intern Fall 2026
Long Beach, California, United States
$28/hr OnsiteInternship
Rocket Lab
Rocket LabNasdaq: RKLB: Operates launch vehicles and manufactures satellites for space missions.
0.25+ YOEEnrolled in engineering, physics, or math degree; GPA 3.0+; 3+ months engineering experience; on-site 12-week internship in Fall 2026.
CAD/ CAM software, NX, Teamcenter, FEA software, ANSYS, Simcenter 3D, FEMAP/NASTRAN, 3D printing, Geometric Dimensioning & Tolerancing
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Spring 2027 Engineering Intern - Undergraduate
Seattle or Van Horn or Huntsville or Denver or Brevard County or Los Angeles or Longmont
$32/hr OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
Undergraduate student (sophomore+), U.S. work-authorized, available full-time during internship, strong communication skills and passion for space; related coursework or hands-on engineering experience preferred.
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2026 Fall Internship - Supplier Quality Engineering Intern
Long Beach, California, United States
$35-$40/hr OnsiteFull Time, Internship
Vast
Vast: Develops and operates commercial artificial-gravity space stations.
Enrolled in a Bachelor's or Master's engineering program; able to work full-time onsite in Long Beach for a 12-week internship; willing to work overtime/weekends; able to lift up to 25 lbs; support supplier screening, testing, and audits.
ERP
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Summer 2027 - Software Engineering Internship
Colorado Springs or Irvine or Longmont or Fremont or Rochester or San Jose
$35-$46/hr OnsiteInternship
Western Digital
Western DigitalNASDAQ: WDC: Design and manufacture data storage devices and systems.
Currently pursuing a Bachelor's or Master's in a technical field, experience with one or more programming languages (C,C++,Python,Java,Go,SQL,JavaScript), strong problem-solving and communication skills.
C, C++, Python, Java, Go (Golang), SQL, JavaScript, Microsoft Office, Git, Linux, IDEs
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Environmental, Health & Safety Internship
South Gate, California, United States
OnsiteInternship
Precision Castparts Corp.
Precision Castparts Corp.NYSE: BRK.B: Manufacturer of complex metal components for aerospace and industrial markets.
0+ YOEPursuing degree in engineering/safety/EH&S or related field; 10+ credits; GPA 3.0+; on-site internship; OSHA/EPA familiarity; MS Office proficiency.
Gensuite, Microsoft Office
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3w
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Engineering Intern (Part-Time)
Santa Ana, California, United States
$20-$21/hr OnsitePart Time, Internship
City of Santa Ana
City of Santa Ana: Provides essential public services and infrastructure to Santa Ana residents.
Currently enrolled undergraduate in engineering/construction-related curriculum with GPA ≥2.5, knowledge of AutoCAD or MicroStation and Microsoft Office, valid driver’s license, ability to conduct field investigations and office tasks.
AutoCAD, MicroStation, Microsoft PowerPoint, Microsoft Excel, Microsoft Word, Microsoft Access
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Engineering Intern
Rancho Santa Margarita, California, United States
$20-$23/hr OnsiteMultiple Commitments Available
Virtium
Virtium: Designs and manufactures industrial-grade storage and memory modules.
Current college student in EE/CE/CS or related field; basic hardware/embedded systems knowledge; strong analytical and documentation skills; U.S. work authorization required; no visa sponsorship.
Python, C, C++
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3w
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Mechanical Engineering Intern
Akron or Ashtabula or Conroe or Freeport or Houston or The Woodlands or McIntosh or Geismar or Los Angeles
OnsiteInternship, Full Time
Huntsman
HuntsmanNYSE: HUN: Manufactures and markets chemical products for consumer and industrial markets.
Pursuing a bachelor's in Mechanical Engineering, 3.0+ GPA preferred, strong mechanical aptitude and communication, proficiency with Microsoft Office, authorized to work in the U.S. without sponsorship.
Microsoft Office
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Geotechnical Engineering Intern
Irvine, California, United States
OnsiteInternship, Part Time
HDR
HDR: Global provider of engineering, architecture, environmental and construction services.
Currently enrolled in an undergraduate or graduate engineering program; basic Microsoft Office skills; willingness to work on-site and in the field; strong problem-solving, communication, and attention to detail; ~20 hours/week.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Geotechnical software
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Geotechnical Engineering Intern
Irvine, California, United States
$22-$26/hr OnsiteMultiple Commitments Available
HDR
HDR: Global firm providing architecture, engineering, and environmental services.
Currently enrolled in an undergraduate or graduate engineering program; basic Microsoft Office skills; attention to detail, problem-solving and communication skills; willingness to perform field work; ~20 hrs/week onsite.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Office, Geotechnical software
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4d
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Engineering Intern (Mechanical or Electrical)
Tustin, California, United States
$20-$23/hr OnsiteMultiple Commitments Available
Design West Technologies
Design West Technologies: Designs and manufactures aerospace and defense electro-mechanical systems.
Pursuing or recent B.S. in mechanical/electrical/aerospace/industrial engineering; SolidWorks and MS Office (Word, Excel) skills; blueprint reading preferred; strong attention to detail and communication.
SolidWorks, MS Office, Microsoft Word, Microsoft Excel
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2mo
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Manufacturing Engineering Intern Fall 2026
Long Beach, California, United States
$28/hr OnsiteInternship
Rocket Lab
Rocket LabNASDAQ: RKLB: Designs and builds launch vehicles and satellite systems.
0.25+ YOEEnrolled in bachelor's in engineering/physics/math with ≥1 semester remaining, GPA≥3.0, 3+ months applied engineering experience, available full-time onsite for ≥12 consecutive weeks starting Aug/Sep 2026.
Computer Aided Design (CAD), Solid Modelling
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Engineering Co-op — Fall 2026
Huntington Beach, California, United States
$2k-$2k/wk OnsiteFull Time, Internship
Mach Industries
Mach Industries: Designs and manufactures autonomous unmanned aerial vehicles for defense.
Currently enrolled in a BS/MS/PhD engineering program (mechanical, aerospace, electrical, computer science, or related); intellectual curiosity and interest in defense/autonomous systems.
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2mo
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Electromechanical Design Engineering Intern - Fall 2026
Irvine or Palo Alto or Normal
$38-$51/hr OnsiteInternship
Rivian and Volkswagen Group Technologies
Rivian and Volkswagen Group Technologies: A joint venture focusing on automotive software and hardware solutions.
Enrolled in a US Bachelor's or Master's program; electrical engineering fundamentals; strong electronics knowledge.
PCIe, CAN, Ethernet, USB, I2C, SPI, PLM
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1d
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Software Engineering Intern – Summer 2027
Fridley or Tempe or Eatontown or Santa Rosa or Lafayette or Boulder or Plymouth or Mounds View or Irvine or North Haven or Memphis or Newton or Dexter or Santa Ana or Mansfield or Fort Worth or Minneapolis or Brooklyn Center or Jacksonville or Boston or Brooklyn Park
$27-$45/hr OnsiteFull Time
Medtronic
MedtronicNew York Stock Exchange: MDT: Develops and manufactures medical devices and digital health solutions.
Currently pursuing BS/MS in computer/software engineering or related with anticipated graduation 2027–2029; full-time internship availability June–Aug; U.S. work authorization required; 3.0 GPA preferred; experience with programming/projects preferred.
C, C++, C#/.NET, SQL, JavaScript, Java, Python, Swift, HTML/CSS, Microsoft Visual Studio, Jenkins, GitLab
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Avionics and Electrical Engineering Fall Co-op
Denver or Long Beach
$28-$32/hr OnsiteInternship
True Anomaly
True Anomaly: Develops autonomous spacecraft and software for space security missions.
Currently enrolled in a four-year electrical engineering program; strong circuit, digital logic, and analog skills; hands-on test-equipment experience; able to work full-time onsite for 20 consecutive weeks beginning Sep 2026; U.S. authorization required.
Altium, OrCAD, KiCAD, LTspice, PSpice, MATLAB/Simulink, Python, C, C++, oscilloscope, multimeter, logic analyzer, function generator, power supply
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