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1,322 intern engineering jobs at 362 companies in Ontario, CA

1mo
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Intern, Engineering
West Sacramento or Woodland or Ontario or Phoenix or Boise
$30/hr OnsiteInternship
Clark Pacific
Clark Pacific: Private U.S. manufacturer that designs, engineers, fabricates, and installs prefabricated building systems for construction projects.
Bachelor's degree in engineering-related field in progress or completed preferred; strong interest in engineering and construction management; proficiency with Microsoft Excel and Office Suite.
Microsoft Excel, Microsoft Office
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3mo
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Engineering Intern
El Segundo, California, United States
$4k-$8k/mo OnsiteFull Time, Internship
Wardstone
Wardstone: Private U.S. defense-tech startup building modular interceptors for air-breathing and ballistic missile defense.
Currently pursuing an engineering, physics, or related technical degree; demonstrated engineering project delivery; MATLAB or Python experience; US Person or lawful permanent resident status required.
MATLAB, Python
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1mo
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Engineering Intern
Huntington Beach, California, United States
$20-$22/yr OnsiteInternship
Composite Manufacturing Entity
Composite Manufacturing Entity: Private advanced composite prepreg manufacturer serving aerospace, defense, automotive, motorsport, marine, and industrial customers.
Currently pursuing a bachelor's degree in Engineering, Business Management, or related field; basic understanding of engineering principles and manufacturing processes; ability to read blueprints and specifications; proficiency with Microsoft Word, Excel, Outlook.
SolidWorks, Microsoft Word, Microsoft Excel, Microsoft Outlook
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3w
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Engineering Intern
Irvine, California, United States
OnsiteInternship, Full Time
Safran Electronics & Defense
Safran Electronics & Defense: French aerospace and defense manufacturer serving civil and military customers with avionics, optronics, navigation, and space equipment.
Currently majoring in engineering or applied sciences; enrolled student graduating May 2027 or later; must be a U.S. Person per ITAR; basic engineering knowledge; 3D modeling software; Microsoft Office proficiency.
Solidworks, CATIA, Pro/E, AutoCAD, Microsoft Outlook, Microsoft Word, Microsoft Excel, Microsoft PowerPoint
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2w
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Engineering Intern
Riverside, California, United States
$18-$22/hr OnsiteMultiple Commitments Available
BLACOH Fluid Control
BLACOH Fluid Control: Family-owned U.S. manufacturer of fluid-control products for municipal and industrial pumping systems.
Currently enrolled in a Bachelor's degree program in Mechanical Engineering or related field; engineering fundamentals; analytical and problem-solving skills; Microsoft Office proficiency; ability to work in manufacturing environments and lift up to 30 lbs.
SolidWorks, Microsoft Office, Microsoft Word, Microsoft Excel, Microsoft PowerPoint
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5d
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Engineering Intern
Lucerne Valley, California, United States
$25-$30/hr OnsiteMultiple Commitments Available
Minerals Technologies Inc.
Minerals Technologies Inc.NYSE: MTX: Innovative Technologies. Essential Solutions.
Currently pursuing a bachelor's or master's degree in chemical, mechanical, electrical, industrial, mining, materials science, environmental, civil, or related engineering; proficiency in Microsoft Office; ability to work in office, lab, and manufacturing environments.
Microsoft Excel, Microsoft Word, Microsoft PowerPoint, Microsoft Outlook, CAD
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1mo
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Engineering Intern
Riverside County or San Bernardino County or Orange County or Los Angeles County
$20-$22/hr OnsiteFull Time, Internship
Ames Construction
Ames Construction: Employee-owned heavy civil and industrial contractor delivering infrastructure projects across transportation, mining, rail, water, and federal work.
Pursuing a degree in civil engineering, construction management, or equivalent; computer literate in Microsoft Office, Bluebeam, and AutoCAD; strong organizational, written, verbal, and time management skills; ability to work in construction site and office environments.
Microsoft Office, Bluebeam, AutoCAD
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2w
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Engineering Intern (Administrative Intern)
Tustin, California, United States
$22/hr OnsitePart Time, Internship
City of Tustin
City of Tustin: Municipal government providing police, public works, water, recreation, planning, and other services to Tustin residents.
High school graduation; enrollment in or recent completion of an associate's or bachelor's program in civil, traffic, or environmental engineering; valid California Class C driver's license; acceptable driving record; background check and physical exam.
Microsoft Office, Microsoft Word, Microsoft Excel, Microsoft Access, Microsoft Outlook, Microsoft PowerPoint, GIS
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Engineering Intern I
Santa Ana, California, United States
$22/hr OnsiteInternship
ACD
ACD: ACD is a private U.S. manufacturer of centrifugal and reciprocating cryogenic pumps and air-separation turboexpanders.
College student or recent graduate in Manufacturing Engineering; knowledge of manufacturing engineering, mechanical design, critical thinking, and attention to detail.
Lean Six Sigma
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Civil Engineering Intern
Orange, California, United States +1 more
$31-$32/hr OnsiteInternship
Kimley-Horn
Kimley-Horn: Full-service engineering, planning, and environmental consulting firm.
In process of receiving ABET-accredited engineering degree (Bachelor's or Master's) in civil, environmental, mechanical, biological, biosystems, chemical, agricultural engineering, or engineering technology.
AutoCAD, Revit, Civil 3D, Microsoft Excel, Microstation, VISSIM, Open Roads, Synchro, GIS
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2mo
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Engineering Intern (Summer 2027)
Bakersfield or Brea or San Diego or Santa Fe Springs or California
$22-$27/hr FieldInternship
Griffith Company
Griffith Company: Employee-owned California general contractor delivering heavy civil infrastructure, transportation, and site-development projects for public and private clients.
Current Bachelor's student in civil engineering, construction management, mechanical engineering, mathematics, or a similar field; internship and educational experience determine pay.
Critical Path Method (CPM)
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1mo
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Intern, Test Engineering
Irving or Riverside
HybridInternship, Temporary
New York Air Brake
New York Air Brake: Private Knorr-Bremse subsidiary manufacturing train-control and braking systems for freight and passenger railroads.
0+ YOEComputer Science, Computer Engineering, or Electrical Engineering Technology student entering junior year with minimum 3.0 GPA, basic software engineering, hands-on testing, data acquisition, and troubleshooting experience.
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Construction Engineering Intern
Chino, California, United States
$24-$28/hr FieldInternship
Flatiron Dragados
Flatiron Dragados: A heavy civil infrastructure contractor delivering resilient and innovative projects.
Currently enrolled in engineering, construction management, or a similar program at an accredited technical college or university.
Computer Aided Design (CAD)
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2mo
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Engineering Intern- Summer 2027
Phoenix or Los Angeles or Chantilly or Denver or Houston or Kansas City or Nashville or Philadelphia or Las Vegas or Plano or Lenexa or New York City or Bentonville
$25-$32/hr OnsiteInternship
Henderson Engineers
Henderson Engineers: Employee-owned national building-systems engineering design firm serving business, community, grocery, health, retail, and venue clients.
High school diploma/GED and current bachelor's studies in architectural, electrical, or mechanical engineering at an ABET-accredited university; strong communication, analytical, computer, and teamwork skills.
AutoCAD, Revit, Bluebeam Revu, Navisworks
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1mo
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Engineering Intern - Summer 2027
Portland or Folsom or San Luis Obispo or Ontario or Laguna Hills or San Diego
$25-$35/hr OnsiteInternship
Water Systems Consulting
Water Systems Consulting: Employee-owned water engineering and strategic communications consulting firm serving municipal and private water agencies and utilities.
Enrolled in a full-time B.S. or M.S. program in civil/environmental engineering, planning, or construction management; good academic standing; MS Office proficiency; strong communication; transcripts required.
Microsoft Office, AutoCAD, ESRI (GIS), hydraulic modeling software
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1mo
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Summer 2027 Engineering Intern
Torrance, California, United States
$38-$45/hr OnsiteInternship, Temporary
Divergent Technologies
Divergent Technologies: Private U.S. manufacturer of software-defined metal structures for aerospace, defense, and automotive customers.
Enrolled in a bachelor's or master's program in engineering, computer science, materials science, or a related field; available onsite 40+ hours weekly for 12 weeks and eligible to access US export-controlled technology.
CATIA, NX, SolidWorks, Python, C++, MATLAB, ANSYS, Abaqus, COMSOL, DAPS
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1mo
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Engineering Intern, EHS
Brea, California, United States
$25-$28/hr OnsiteInternship
Howmet Aerospace
Howmet AerospaceNYSE: HWM: Provides advanced engineered solutions for aerospace and industrial markets.
Pursuing a Bachelor's degree from an accredited institution; minimum completion of Sophomore level coursework; legally authorized to work in the US without visa sponsorship.
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1mo
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Engineering & Technical Intern
Diamond Bar, California, United States
$29-$38/hr OnsiteFull Time, Internship
Niagara Bottling
Niagara Bottling: Family-owned manufacturer of bottled water and beverage products.
0+ YOECurrent junior or rising senior pursuing a bachelor's degree; no work experience required. Preferred: one year of previous internship experience, problem-solving, planning, communication, teamwork, and presentation skills.
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1mo
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Geotechnical Engineering Intern
Irvine, California, United States
$20-$25/hr OnsiteInternship
ENGEO
ENGEO: Employee-owned geotechnical and civil engineering consultancy serving developers, public agencies, and infrastructure projects worldwide.
University student in engineering or related field; ability to work in office, field, and laboratory environments; willingness to travel to lab locations; no prior experience required.
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