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1,354 intern jobs at 631 companies in Fontana, CA

1mo
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Intern to Intern Conversion – Business Functions (All) (Summer 2026 Intern Program)
Everett or Huntsville or Charleston or Tinker Air Force Base or Oklahoma City or Berkeley or Huntington Beach or Hazelwood or Germantown or El Segundo or China Lake or Arlington or Ridley Park or Tukwila or North Charleston or Kennedy Space Center or Fairfax or Houston or Colorado Springs or Chicago or Long Beach or Renton or Saint Louis or Dallas or Seattle or Auburn or Philadelphia or San Antonio or Kent or Mesa
$38k-$64k/yr OnsiteFull Time, Internship
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, satellites, and defense systems.
Must be enrolled in a bachelor's or higher program (graduation on/after Aug 2027), be available full-time for a 10-12 week Summer 2027 internship, and have previously interned with Boeing.
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2mo
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Pharmacy Intern
Alhambra, California, United States
$16-$22/hr OnsitePart Time
CVS Health
CVS HealthNYSE: CVS: Provides retail pharmacy, health insurance, and pharmacy benefit management services.
Active Pharmacy Intern license in the employment state; not on the DEA Excluded Parties List; no pending felony related to controlled substances; currently enrolled in a School of Pharmacy.
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5d
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Pharmacist Intern
Covina, California, United States
$24-$26/hr OnsitePart Time
Polaris Pharmacy Services
Polaris Pharmacy Services: Provide pharmacy services to long-term care and correctional facilities
Active pharmacist intern license in state of practice, pharmacy doctorate candidacy preferred, prior pharmacy experience preferred, ability to prepare prescription medications, flexible hours, strong communication, Microsoft Office skills.
Microsoft Word, Microsoft Excel, Microsoft Outlook
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1mo
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Intern
Rancho Cucamonga, California, United States
OnsiteInternship
Hillside Community Church
Hillside Community Church: Religious institution providing worship services and community programming.
Internship providing ministry training and leadership development; plan and execute events, foster community connections; 10–20 hours/week from late Aug 2026 to early May 2027.
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2mo
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Intern
La Mirada, California, United States
OnsiteAll Commitments Available
Fellowship of Christian Athletes
Fellowship of Christian Athletes: Provides Christian ministry and mentorship to athletes and coaches.
Internship for student athletes; unpaid or with nominal living stipend; summer or semester program; ministry-focused experience.
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1mo
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Intern
Pasadena, California, United States
$18-$25/hr OnsitePart Time, Internship
Morgan Stanley
Morgan StanleyNYSE: MS: Provides global investment banking, wealth management, and advisory services.
High school diploma required; pursuing college degree preferred. Must be 18+, internship up to 10 months. Strong communication, teamwork, analytical skills and interest in global wealth management.
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2w
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Intern
Pasadena, California, United States
$60k-$77k/yr OnsitePart Time
UBS
UBSSIX Swiss Exchange: UBSG: Global bank providing wealth management and investment services.
Enrolled in a two- or four-year college; strong academic record and campus involvement; interest in wealth management; analytical, communication and teamwork skills.
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2w
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Intern
Monrovia, California, United States
$21-$30/hr OnsitePart Time
San Gabriel Valley Council of Governments
San Gabriel Valley Council of Governments: Regional government planning agency serving the San Gabriel Valley.
Currently enrolled or recently graduated college students in related fields; experience with Microsoft Office/Excel; interest or coursework in engineering, project management, procurement, or data analysis; able to lift 25 lbs.
Microsoft Excel, Microsoft Word, Power BI, SharePoint, GIS
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3mo
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HR Intern - US
Los Angeles, California, United States
$18/hr OnsiteInternship
Pixi
Pixi: Develops and sells botanically-infused skincare and makeup products.
0+ YOEEntry-level HR intern pursuing Bachelor's in Business/HR; strong communication, organized, team player with problem-solving ability.
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2mo
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Counselor Intern Fall 2026
Fullerton, California, United States
OnsiteFull Time
Fullerton Joint Union High School District
Fullerton Joint Union High School District: Operates public high schools and secondary education programs.
University letter indicating eligibility for Counseling intern experience
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1mo
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BY REFERRAL ONLY - INTERN 2026-2027
San Bernardino, California, United States
OnsitePart Time, Internship
San Bernardino County Superintendent of Schools
San Bernardino County Superintendent of Schools: Provides educational leadership and support services to school districts.
Internal candidates only; invitation from SBCSS HR required. Part-time internship for the 2026-2027 year (120 days).
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2mo
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Pharmacy Intern - Weekends
Los Angeles, California, United States
$37/hr OnsiteTemporary
UCLA Health
UCLA Health: Provides comprehensive hospital services and academic medical research.
Enrollment in PharmD program and CA pharmacy intern license required; ability to perform pharmaceutical calculations, prepare IV/chemotherapy sterile compounding, computer order entry, and lift/push up to 50 lbs. 2 years inpatient experience preferred.
Pyxis medstations
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3mo
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Intern - Engineering
Irvine, California, United States
$19-$22/hr OnsiteInternship, Part Time
Transportation Corridor Agencies
Transportation Corridor Agencies: Operates and maintains public toll roads in Orange County.
0+ YOEJunior/senior undergrad or graduate student in civil/transportation/environmental engineering; GPA 2.5+; strong MS Office; basic reading of drawings; eager to learn; no prior experience required.
Microsoft Office, AutoCAD, GIS
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2mo
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PIP Intern
Whittier, California, United States
$16/hr OnsitePart Time
SEP United
SEP United: Provides vocational support services for individuals with disabilities.
Internship involving assisting departments, supporting projects, research, data analysis, and administrative tasks.
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1w
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Intern, Project
Commerce, California, United States
HybridPart Time
AltaMed
AltaMed: Provides comprehensive healthcare services to underserved Southern California communities.
Bilingual English/Spanish required; experience in patient education or healthcare; familiarity with social determinants of health; bachelor\u0002s degree preferred; available 29 hours/week; reliable transportation; ability to use EHR.
Electronic Health Record (EHR)
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1w
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Communications Intern (Unpaid Intern)
Santa Ana, California, United States
OnsiteInternship
County of Orange
County of Orange: Provides essential public services to Orange County residents.
Must be 18+, commit 15–20 hours/week for 3+ months (Tues–Thurs 8am–5pm preferred), pass interview and Live Scan, provide resume/cover letter, positive attitude and willingness to learn.
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1mo
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Intern (Contracts & Procurement)
Chino, California, United States
$21/hr OnsiteMultiple Commitments Available
Inland Empire Utilities Agency
Inland Empire Utilities Agency: Provides regional wastewater treatment and wholesale water distribution services.
Current undergraduate or graduate student in business/finance/operations/supply chain or related field; high school diploma/GED; strong communication, analytical and computer skills (Word, Excel, Outlook, PowerPoint); ability to manage multiple assignments.
Microsoft Word, Microsoft Excel, Microsoft Outlook, Microsoft PowerPoint, Microsoft Access
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3d
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Intern II - CIP
Corona, California, United States
$18-$22/hr OnsitePart Time
City of Corona
City of Corona: Provides municipal services and local governance to the community.
Current enrollment in a related college program with at least one year completed; high school diploma or GED; coursework in engineering, planning, construction, or related fields preferred.
Computer-Aided Drafting (CAD)
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3w
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Lifestyle Intern - Fall
Los Angeles, California, United States
OnsiteInternship
Together Group
Together Group: Agency collective providing marketing services for luxury lifestyle brands.
Support influencer and press relations, media monitoring, research, pitching, and administrative tasks; proficiency with Microsoft Office, Google Workspace, and digital communication; strong written and verbal skills.
Microsoft Office, Google Workspace, Microsoft Teams
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1w
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2027 Intern - Technology
Atlanta or Chicago or Houston or Los Angeles or New York or San Francisco or Washington
$30-$35/hr OnsiteInternship
FTI Consulting
FTI ConsultingNYSE: FCN: Global business advisory firm helping organizations manage change and risk.
Currently pursuing a bachelor’s degree (grad Dec 2027–Sep 2028), minimum 3.0 GPA, available 40 hours/week during summer 2027, authorized to work in the US, able to travel to clients and offices.
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