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Internship Jobs in California.

All active internship roles based in California, sourced directly from company boards. Updated every few hours.

Total jobs
2,246
positions indexed
New today
135
last 24 hours
Companies
492
actively hiring
Worldwide remote
0
from anywhere
in: California employment: Internship Clear all
Sort Newest Top salary
JC
BEST Technical Sales Trainee - HVAC Controls- San Francisco, CA
Johnson Controls
⚡ Apply early Livermore-California-United St... Onsite $102,000–$102,000
● New 👁 Seen ✓ Applied 1mo ago
White Cap
Career Development Program - Operations Leader Trainee
White Cap
⚡ Apply early Santa Ana_92705 Onsite $47,424–$66,352
● New 👁 Seen ✓ Applied 1mo ago
Danaher
Hardware Engineering Intern
Danaher
⚡ Apply early Vista, California, United Stat... Onsite $52,000–$72,800
● New 👁 Seen ✓ Applied 1mo ago
Charles River Associates
(2028 Bachelor's/Master's graduates) Accounting/Business/Finance Consulting Analyst/Associate Intern (Summer 2027)
Charles River Associates
⚡ Apply early Boston, MA, United States; Chi... Hybrid $62,400–$78,000
● New 👁 Seen ✓ Applied 1mo ago
Tri
Human-Centered AI Research Intern, Causal Reasoning Models
Tri
⚡ Apply early Los Altos, CA Hybrid $93,600–$135,200
● New 👁 Seen ✓ Applied 1mo ago
Rocket Lab Corporation
Security Analyst Intern Summer 2027
Rocket Lab Corporation
⚡ Apply early Long Beach, CA Onsite $52,000–$52,000
● New 👁 Seen ✓ Applied 1mo ago
Rocket Lab Corporation
Security Analyst Intern Spring 2027
Rocket Lab Corporation
⚡ Apply early Long Beach, CA Onsite $52,000–$52,000
● New 👁 Seen ✓ Applied 1mo ago
Rocket Lab Corporation
Propulsion Analyst Intern Summer 2027
Rocket Lab Corporation
⚡ Apply early Long Beach, CA Onsite $58,240–$58,240
● New 👁 Seen ✓ Applied 1mo ago
Rocket Lab Corporation
Propulsion Analyst Intern Spring 2027
Rocket Lab Corporation
⚡ Apply early Long Beach, CA Onsite $58,240–$58,240
● New 👁 Seen ✓ Applied 1mo ago
Rocket Lab Corporation
Manufacturing Engineering Intern Summer 2027
Rocket Lab Corporation
⚡ Apply early Long Beach, CA Onsite $58,240–$58,240
● New 👁 Seen ✓ Applied 1mo ago
Rocket Lab Corporation
Manufacturing Engineering Intern Spring 2027
Rocket Lab Corporation
⚡ Apply early Long Beach, CA Onsite $58,240–$58,240
● New 👁 Seen ✓ Applied 1mo ago
ST
Apprentice Piercer (Future Opportunity)
STUDS
⚡ Apply early Irvine, CA Onsite
● New 👁 Seen ✓ Applied 1mo ago
ST
Apprentice Piercer (Future Opportunity)
STUDS
⚡ Apply early Santa Clara, CA Onsite
● New 👁 Seen ✓ Applied 1mo ago
ST
Apprentice Piercer (Future Opportunity)
STUDS
⚡ Apply early Venice, CA Onsite
● New 👁 Seen ✓ Applied 1mo ago
ST
Apprentice Piercer (Future Opportunity)
STUDS
⚡ Apply early Canoga Park, CA Onsite
● New 👁 Seen ✓ Applied 1mo ago
ST
Apprentice Piercer (Future Opportunity)
STUDS
⚡ Apply early Los Angeles, CA Onsite
● New 👁 Seen ✓ Applied 1mo ago
ST
Apprentice Piercer (Future Opportunity)
STUDS
⚡ Apply early Roseville, CA Onsite
● New 👁 Seen ✓ Applied 1mo ago
Mill
Product Design Engineering Intern, Fall/Winter 2026
Mill
⚡ Apply early San Bruno, California Onsite
● New 👁 Seen ✓ Applied 1mo ago
Mill
Electrical Engineering Intern, Fall/Winter 2026
Mill
⚡ Apply early San Bruno, California Onsite
● New 👁 Seen ✓ Applied 1mo ago
Clockwork.io
Software Engineer Intern
Clockwork.io
⚡ Apply early Palo Alto, CA Onsite
● New 👁 Seen ✓ Applied 1mo ago
Altium Packaging
Plant Production Supervisor Trainee
Altium Packaging
⚡ Apply early Fresno Onsite $60,000–$73,500
● New 👁 Seen ✓ Applied 1mo ago
AD
Algorithm Development Engineer Intern
Analog Devices
⚡ Apply early US, MA, Wilmington Onsite $45,760–$85,280
● New 👁 Seen ✓ Applied 1mo ago
AD
Product Engineer (Product Development) Intern
Analog Devices
⚡ Apply early US, MA, Wilmington Onsite $45,760–$85,280
● New 👁 Seen ✓ Applied 1mo ago
AD
Analog Design Engineer Intern
Analog Devices
⚡ Apply early US, MA, Wilmington Onsite $45,760–$85,280
● New 👁 Seen ✓ Applied 1mo ago
AD
AI/ML Engineer Intern
Analog Devices
⚡ Apply early US, MA, Wilmington Onsite $45,760–$85,280
● New 👁 Seen ✓ Applied 1mo ago

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