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239 2026 intern jobs at 75 companies in Upland, CA

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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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3mo
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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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3w
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Fall 2026 Intern, Properties (LA)
West Hollywood, California, United States
$20/hr HybridInternship, Part Time
Excel Sports Management
Excel Sports Management: Professional sports agency representing athletes and corporate brands.
Fall semester paid internship, 24-29.9 hours/week, hybrid with ~3 days in-office; must have senior standing in college, be enrolled in graduate school, or hold a bachelor’s/postgraduate degree; interns provide own transportation and housing.
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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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2w
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Management Trainee Intern Fall 2026
Ontario, California, United States
$21/hr OnsiteInternship, Part Time
Enterprise Mobility
Enterprise Mobility: Provider of vehicle rental and diverse mobility solutions.
0.5+ YOEMust be 18+, enrolled full-time in a bachelor's program (graduating Dec 2026), 6 months experience in sales/customer service/leadership/management, valid unrestricted driver's license, authorized to work in the US, available for an 8-10 week Oct–Dec 2026 commitment.
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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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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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3mo
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VCA ASEC Specialty Intern 2026-27
Los Angeles, California, United States
$81k/yr OnsiteFull Time
VCA Animal Hospitals
VCA Animal Hospitals: Operates animal hospitals providing veterinary medicine and pet services.
Internship at VCA Animal Hospitals; full-time position with competitive compensation and benefits; location Los Angeles, CA; salary around $81,000 per year; Workday-based application process.
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2mo
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Psychologist Intern for 2026-27
Anaheim, California, United States
OnsiteFull Time
Savanna School District
Savanna School District: Public school district providing elementary education in Orange County.
Enrolled in a graduate-level school psychology program; must hold a California internship credential with school psychologist authorization or a college/university letter of eligibility; DOJ fingerprint clearance; bilingual preferred.
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2026-2027 Health, Safety and Environment Intern (Returning Intern)
Richmond or Pasadena or Bakersfield or Belle Chasse or Pascagoula or Midland or Covington or Geismar or El Segundo or Houston or Ames or Greeley or San Ramon or Salt Lake City or Denver
$24-$38/hr OnsiteFull Time
Chevron
ChevronNYSE: CVX: Global energy producing oil, gas, and petrochemicals.
0+ YOEPursuing a bachelor’s, master’s, or PhD in relevant environmental, safety, or engineering fields; ≤2 years experience; willing to work domestic and international locations; strong regulatory and analytical interest.
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School Counselor Intern - Fall 2026
La Habra, California, United States
OnsiteInternship, Part Time
La Habra City School District
La Habra City School District: Operates public elementary and middle schools in Orange County.
Letter of introduction, resume, and proof of enrollment in a Pupil Personnel Services credential program; unpaid internship.
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2d
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Disney+ Hulu Brand Marketing Intern, Fall 2026 
Burbank, California, United States
$23/hr HybridFull Time, Internship
The Walt Disney Company
The Walt Disney CompanyNYSE: DIS: Produces movies, operates theme parks, and provides streaming services.
Marketing intern supporting Disney+ and Hulu brand strategy and campaigns. Requires Microsoft Office Suite, Google Workspace, Photoshop, Airtable, communication, analytical thinking, collaboration, and unrestricted work authorization.
Microsoft Office Suite, Google Workspace, Photoshop, Airtable
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2mo
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Manufacturing Engineering Intern Fall 2026
Long Beach, California, United States
$28/hr OnsiteMultiple Commitments Available
Rocket Lab
Rocket LabNasdaq: RKLB: Operates launch vehicles and manufactures satellites for space missions.
0+ YOEBachelor’s engineering/physics/math student with at least one semester remaining; GPA 3.0+, 3+ months applied engineering experience; on-site 12+ week internship in Long Beach, CA.
CAD, Mills, Lathes
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3w
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Data Analytics Intern (Fall 2026)
Redondo Beach, California, United States
$30/hr OnsiteInternship
Impulse Space
Impulse Space: Developing in-space transportation services and orbital transfer vehicles.
Design and implement manufacturing data infrastructure, build automated Power BI dashboards, validate data, and support KPI reporting; must be onsite in Redondo Beach and meet U.S. ITAR eligibility.
Power BI, Microsoft Excel, Power Query, SQL, ETL, Manufacturo
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1mo
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Investment Banking Intern (Fall 2026)
Los Angeles, California, United States
OnsiteFull Time
ComCap
ComCap: Boutique investment bank advising the digital commerce and technology sectors.
Junior or senior undergraduate with 3.5+ GPA, US work authorization, financial modeling and Excel skills, PowerPoint familiarity, strong research and communication abilities.
Microsoft Excel, PowerPoint
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2d
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Social Marketing Intern - Fall 2026
Culver City, California, United States
$19/hr HybridMultiple Commitments Available
Sony Pictures Entertainment
Sony Pictures EntertainmentNYSE: SONY: Develops, produces, and distributes films and television programming worldwide.
Currently pursuing a bachelor's degree in marketing, communications, or creative design/editing; strong social media knowledge, communication, organization, collaboration, and social copywriting skills required.
Instagram, TikTok, Adobe Creative Suite, Adobe Premiere, Adobe Illustrator, Adobe Photoshop
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6h
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Mechanical Engineering Intern (Fall 2026)
Tustin, California, United States
$20/hr OnsitePart Time, Internship
Salas O'Brien
Salas O'Brien: Provides integrated engineering design and technical consulting services.
Currently enrolled in an engineering bachelor's or master's program; CAD experience, strong communication, teamwork, adaptability, and willingness to work onsite or at project locations. Prior internship is optional.
CAD, AutoCAD, Revit
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Corporate Development Intern (Fall 2026)
Los Angeles or New York
$25/hr OnsitePart Time, Internship
Houlihan Lokey
Houlihan LokeyNYSE: HLI: Provides global investment banking and financial restructuring advisory services.
Junior or senior bachelor’s student in finance/accounting/economics; basic financial modeling; strong Excel, PowerPoint, Word skills; analytical, written and verbal communication; self-starter; interest in investment banking or corporate development.
Salesforce, Pitchbook, Microsoft Excel, Microsoft PowerPoint, Microsoft Word
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3w
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External Affairs Intern (Fall 2026)
Los Angeles or Washington
$21/hr HybridFull Time, Internship
FWD.us
FWD.us: Advocating for bipartisan immigration and criminal justice reforms.
Interest in immigration and criminal justice reform; organized and detail-oriented; basic social media and digital content skills; available full-time M–F 9:30–5:30 for ≥4 months; Canva and video editing a plus.
Canva, Instagram, Facebook, LinkedIn, X/Twitter, Threads, Bluesky, YouTube
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3w
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Intern (Enterprise Architecture) - Fall 2026
Orange, California, United States
$48k-$65k/yr OnsiteInternship
CalOptima Health
CalOptima Health: Provides public health insurance for Orange County residents.
Enrollment in a college or vocational program required; coursework in IT/CS preferred. Duties include supporting enterprise architecture, documentation, analysis, and meeting preparation.
Microsoft Word, Microsoft Outlook, Microsoft Excel, Microsoft PowerPoint
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