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194 support intern jobs at 135 companies in Diamond Bar, CA

2mo
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Intern
Woodland Hills, California, United States
OnsiteAll Commitments Available
Tarzana Treatment Centers
Tarzana Treatment Centers: Provides integrated substance use and mental health treatment services.
Provides administrative and clerical support; high school diploma or GED; prior experience in chemical dependency or behavioral healthcare setting helpful.
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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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18h
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Intern With Us
Los Angeles County, California, United States
OnsiteInternship
Western Justice Center
Western Justice Center: Provides conflict resolution and restorative justice education for schools.
Internship providing hands-on experience in education, conflict resolution, communications, nonprofit management, program support, research, and event coordination.
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1d
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Intern
Baldwin Park, California, United States
OnsiteFull Time, Internship
Freudenberg Group
Freudenberg Group: Global manufacturer of specialized technical components and advanced materials
Current student or recent graduate of a four-year university; internship supports finance and controlling activities.
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3w
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Pharmacy Intern
Fontana, California, United States
$23-$28/hr OnsitePart Time
CVS Health
CVS HealthNYSE: CVS: Provides retail pharmacy, health insurance, and pharmacy benefit management services.
1+ YOEEnrolled in ACPE-accredited pharmacy school, must possess or be obtaining valid intern or technician licensure; able to complete training, provide patient care support, and follow SOPs.
Outlook, Microsoft Excel, Word, PowerPoint
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2mo
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Intern
Rancho Dominguez, California, United States
$20-$25/hr OnsiteFull Time
The Brock Group
The Brock Group: Provides specialty craft and maintenance services for industrial facilities.
0+ YOEInternship for construction management/engineering students; organized, detail-oriented; able to learn quickly; supports various project teams.
Microsoft Office, Bluebeam, Primavera, MS Project
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1d
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Fall Marketing Intern
Los Angeles, California, United States
$20/hr HybridMultiple Commitments Available
Crazy Mountain
Crazy Mountain: A premium non-alcoholic beverage making brews for good times and clear minds.
Marketing intern supporting brand initiatives, social media, influencer partnerships, events, content creation, campaign coordination, research, reporting, and marketing operations.
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6d
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Planning Intern
Pico Rivera, California, United States
$18-$23/hr OnsiteMultiple Commitments Available
Pico Rivera
Pico Rivera: Provides municipal governance and public services to the local community.
Current college or university enrollment in urban planning, city planning, public policy, political science, or a related field; minimum 2.5 GPA; California Class C driver's license required.
GIS
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1d
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Administrative Intern
Glendora, California, United States
$22-$26/hr OnsitePart Time, Temporary
City of Glendora
City of Glendora: Providing municipal governance and community services to Glendora residents.
High school graduation or equivalent plus at least two years of college in business, political science, public administration, or a related field. Requires MS Office Suite experience and strong communication, research, and customer service skills.
Microsoft Office Suite, Microsoft Excel, Microsoft Word, Microsoft Outlook
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1w
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Intern, Membership & Industry Relations
Santa Monica, California, United States
OnsitePart Time
The Recording Academy
The Recording Academy: Produces the GRAMMY Awards and supports music industry professionals.
Currently enrolled college student; interest in music industry; strong verbal, written, analytical and computer skills; able to work evenings and weekends; must receive college credit for internship.
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1mo
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Administrative Intern/Senior Administrative Intern (Part-Time)
Santa Ana, California, United States
$19-$21/hr OnsitePart Time, Internship
City of Santa Ana
City of Santa Ana: Provides essential public services and infrastructure to Santa Ana residents.
Undergraduate enrollment with 2.5+ GPA, strong Microsoft Office skills (Excel/Word/PowerPoint), ability to work up to 19 hours/week (may include weekends), some assignments may require a California Class C driver license and background check.
Microsoft Excel, Microsoft Word, Microsoft PowerPoint, Microsoft Office, Laserfiche, OneMeeting, Civic Rec, Adobe
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2w
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ADMINISTRATIVE INTERN III
Carson, California, United States
$18-$21/hr OnsitePart Time
City of Carson
City of Carson: Provides municipal services and infrastructure to the Carson community.
0.5+ YOECurrent college senior or recent graduate within 6 months; up to 6 months administrative or clerical experience; skills in Microsoft Office, data entry, research, written and oral communication.
Microsoft Office
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3w
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Administrative Intern II
Los Angeles, California, United States
$29/hr OnsiteFull Time
Los Angeles World Airports
Los Angeles World Airports: Operates the Los Angeles International Airport and Van Nuys Airport.
Bachelor's degree required, legal right to work in the US, proficiency with Microsoft Office, strong organizational and communication skills.
Microsoft Office
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2mo
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TSN Intern Support Provider for the 2026-2028 (Internal Posting) #8753.00
San Bernardino, California, United States
$2k/mo OnsitePart Time
San Bernardino County Superintendent of Schools
San Bernardino County Superintendent of Schools: Provides educational leadership and support services to school districts.
3+ YOECurrent SBCSS tenured contract teacher; completed 3 years of recent full-time instructional experience; valid California Clear Education Specialist or Clear General Education credential.
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1mo
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YearUp Intern Program - Cohort 17
Chicago or Arlington Heights or Los Angeles or San Francisco or Newark
OnsiteMultiple Commitments Available
United Airlines
United AirlinesNASDAQ: UAL: Operates a global network of passenger and cargo flights.
High school diploma or equivalent; Microsoft Office skills (Excel, PowerPoint, Teams, Outlook); strong verbal/written communication; reliable transportation; legal authorization to work in the US without sponsorship.
Microsoft Office, Microsoft Excel, Microsoft PowerPoint, Microsoft Teams, Microsoft Outlook
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1mo
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Marketing Intern
Aspen or Los Angeles
OnsiteFull Time
Cos Bar
Cos Bar: Luxury beauty retailer offering curated skincare, makeup, and fragrance.
Support marketing with social media, copywriting, analytics, event support, and marketing reports. Knowledge of Facebook, Twitter, YouTube; strong communication, organization, and time-management skills.
Facebook, Twitter, YouTube
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1mo
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People Team Intern
El Segundo, California, United States
$17-$20/hr OnsitePart Time, Internship
Belkin
Belkin: Designs and manufactures mobile power and connectivity accessories.
Assist HR processes and branding, coordinate intern events, support year-end activities and paperless project; proficient in Microsoft Excel, Word, PowerPoint, Outlook; handle confidential information; proactive and organized.
Microsoft Excel, Microsoft Word, Microsoft PowerPoint, Microsoft Outlook
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1mo
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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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Intern, Safety & Environmental
Orange, California, United States
$20-$23/hr OnsitePart Time
Orange County Transportation Authority
Orange County Transportation Authority: Public transportation authority serving Orange County, California.
Current full-time college enrollment in a related field, minimum 2.5 GPA, strong analytical and communication skills, proficiency with Microsoft Office, ability to support safety and environmental programs.
Microsoft Office
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1w
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Administrative Intern I - Communications
Los Angeles or California
$20/hr OnsiteTemporary
Housing Authority of the City of Los Angeles
Housing Authority of the City of Los Angeles: Provides affordable housing and rental assistance to Los Angeles residents.
1+ YOEEnrollment in or graduation from an accredited associate or bachelor program,1 year research/analysis experience,communications/digital media skills preferred,Canva and video editing experience preferred,valid California Class C driver license.
Canva
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