9 mechanical engineering intern jobs at 8 companies in Lancaster, CA

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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
2mo
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Mechanical 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 BS/MS/PhD in engineering/physics/math with ≥1 semester remaining, GPA ≥3.0, ≥3 months applied engineering experience, able to work full-time on-site for ≥12 weeks beginning Aug/Sept 2026.
CAD/CAM, NX, Teamcenter, ANSYS, Simcenter 3D, FEMAP/NASTRAN, 3D printing
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Mechanical Engineering Intern / Co-op
Torrance or Mojave
$25-$40/hr OnsiteMultiple Commitments Available
GITAI
GITAI: Developing autonomous robotic systems for labor in space.
1+ YOECurrently enrolled in a relevant bachelor’s or master’s program;1+ year hands-on student engineering project experience;experience taking hardware through design, fabrication, assembly, and test;3D CAD proficiency;U.S. work authorization and U.S. citizenship or equivalent for export-controlled work.
SolidWorks, GD&T
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Engineering Intern
Diamond Bar, California, United States
$18-$23/hr OnsitePart Time
Tetra Tech
Tetra TechNASDAQ: TTEK: Global provider of high-end consulting and engineering services.
Pursuing a bachelor\u0002s in civil, chemical, mechanical, or environmental engineering; Microsoft Office proficiency; strong communication and multitasking skills.
Microsoft Office, Microsoft Excel
1w
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Engineering Intern
Burbank, California, United States
$25/hr OnsiteInternship
Senior
SeniorLondon Stock Exchange: SNR: Designs and manufactures high-technology components for aerospace and land vehicles.
Working toward or recently graduated with BS/MS/PhD in Mechanical/Aerospace/Physics; proficient in MS Office, MATLAB or programming (VBA/Python); strong problem-solving and communication; able to work 24-40 hrs/week onsite.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, MATLAB, VBA, Python
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Engineering Intern in Diamond Bar, California, United States
Diamond Bar, California, United States
$18-$23/hr OnsitePart Time
Tetra Tech
Tetra TechNASDAQ: TTEK: Provides global consulting and engineering services for water and environment.
Pursuing a bachelor’s in Civil/Chemical/Mechanical/Environmental Engineering; Microsoft Office proficiency; strong communication, multitasking, and attention to detail.
Microsoft Office, Microsoft Excel
1mo
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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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Operations Co-Op/Intern (Fall/Winter 2026)
North Hollywood, California, United States
OnsiteInternship
Precision Castparts Corp.
Precision Castparts Corp.NYSE: BRK.B: Manufacturer of complex metal components for aerospace and industrial markets.
Currently pursuing a BS in Operations Management, Engineering, or Business Management (completed at least freshman year). Interest in manufacturing operations and leadership, continuous improvement, data analysis, root cause problem solving, and mechanical aptitude.
2mo
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Ottawa Infotainment Internship Program – “Alligator Wrestling Program” (Summer 2026)
Ottawa or Detroit or Windsor or Los Angeles
OnsiteInternship
Ottawa Infotainment
Ottawa Infotainment: A building software-defined vehicle systems and infotainment platforms.
Curious, self-directed candidates with problem-solving skills and interest or background in software, electrical, mechanical, design, or supply chain/business operations; able to own deliverables and present to leadership.