142 support intern jobs at 110 companies in Riverside, CA

1mo
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Intern
Ontario, California, United States
RemoteInternship
Falcon Wealth Planning
Falcon Wealth Planning: Fee-only firm providing comprehensive financial planning and investment management.
Seeking a professional, detail-oriented, eager-to-learn intern to support Operations, Financial Planning, Client Service, Marketing, Business Development, Compliance, and Administration.
3mo
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INTERN - P/T
Newport Beach, California, United States
$22/hr OnsitePart Time
City of Newport Beach
City of Newport Beach: Provides municipal services and governance for the Newport Beach community.
High school graduation or equivalent; current enrollment in a degree program; valid California driver's license may be required.
5d
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Intern (Administration)
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.
Must be enrolled in or graduated from undergraduate/graduate studies in a related field, possess a valid Class C California driver, strong computer skills (Word, Excel, PowerPoint), and excellent communication and analytical ability.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Access, Microsoft Outlook
3d
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Gallery Intern
Los Angeles, California, United States
$18/hr OnsiteInternship, Part Time
David Zwirner
David Zwirner: Global contemporary art gallery representing major artists and estates.
Interest in contemporary art, strong communication and interpersonal skills, teamwork, organization, punctuality, and willingness to learn; resume and cover letter required.
1w
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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
1mo
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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.
3d
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Intern (Strategic Development) - 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 2- or 4-year college program plus high school diploma or equivalent; ability to manage projects, perform research and analysis, communicate clearly, and work flexible hours.
Microsoft Word, Microsoft Outlook, Microsoft Excel, Microsoft PowerPoint
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
1w
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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
1w
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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
2mo
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VETERAN INTERN, (VARIOUS SPECIALTIES)
Los Angeles County, California, United States
$4k/mo OnsiteFull Time
County of Los Angeles
County of Los Angeles: Provides public services and healthcare to Los Angeles County residents.
0+ YOENo experience required; must be discharged from US Armed Forces under honorable conditions.
1mo
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Pharmacy Intern
Upland or La Puente or Rowland Heights
$18-$31/hr OnsitePart Time
Walgreens
Walgreens: Retail pharmacy providing prescriptions and health and wellness products.
Must be enrolled in a school of Pharmacy, fluent in English, willing to work flexible schedule including evenings and weekends; will assist pharmacists, process prescriptions, support inventory and customer service.
2d
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Marketing Intern
Chino, California, United States
$20-$24/hr OnsitePart Time
Chino Commercial Bank
Chino Commercial BankOTC Markets: CCBC: Provides community-focused personal and business banking and lending services.
Support social media, create digital content and graphics, assist campaign execution, conduct market research, and maintain marketing assets. Requires strong communication, organization, and design aptitude.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Canva, Adobe Creative Suite
1mo
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EHS Intern
Irvine or United States or London
$20-$25/hr OnsiteFull Time
BSI
BSI: Sets international business standards and provides certification and training.
Working toward a bachelor's in science or engineering (or equivalent experience). Supports EHS projects including assessments, audits, ISO 14001/45001, industrial hygiene, regulatory compliance, and training; strong communication and data recording skills.
1mo
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Intern, Accounting
Aliso Viejo, California, United States
$21-$34/hr OnsiteInternship
MicroVention
MicroVention: Manufacturer of neurovascular medical devices for stroke treatment.
Pursuing accounting/finance/business degree, intermediate/advanced Excel, GL knowledge, accuracy with large data sets, and ability to work independently; internship tasks include reconciliations, audit support, AP/AR assistance, and ERP work.
Microsoft Excel, SAP, JDE
1mo
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Student Intern - Safety/Risk
Temecula, California, United States
$18-$23/hr OnsiteMultiple Commitments Available
Rancho California Water District
Rancho California Water District: Provides water and wastewater services to the Temecula Valley.
Currently enrolled in an accredited college; temporary student intern limited to 900 hours per fiscal year and no more than 29 hours per seven-day period. Duties include training administration, project research, safety compliance inspections, records management, phone support, and public inquiries. Submit cover letter and resume.
3mo
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2026 - 2027 Intern class
Los Angeles, California, United States
$80k/yr OnsiteFull Time
Mars Veterinary Health
Mars Veterinary Health: Global provider of preventive, specialty, and emergency veterinary care.
Participate in a rotating internship, provide veterinary patient care, and build strong client relationships; supported by a network of clinicians and educational resources.
2mo
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Procurement Intern
Irvine, California, United States
$26-$29/hr OnsiteInternship, Temporary
Shimmick
ShimmickNASDAQ: SHIM: Builds large-scale water and transportation infrastructure projects.
Currently enrolled in a bachelor's program (1+ year completed). Supports procurement activities including RFP preparation, vendor quote review, order tracking, and invoice follow-up. Familiarity with Microsoft Office and basic industry software preferred. Must pass pre-employment substance test.
CADD, HCS, AutoCAD, MicroStation, GIS, Hydrologic/Hydraulic models, Microsoft Office Suite
2d
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Nonprofit Events and Hospitality Intern
Santa Ana, California, United States
OnsiteInternship
Casa de la Familia
Casa de la Familia: Provides specialized trauma-informed mental health services and crisis intervention.
Undergraduate students seeking internship hours; administrative and event support skills, proficiency with Microsoft Office (Excel and PowerPoint), strong communication, organization, and time-management; able to commit ~10 hrs/week for 6 months.
Microsoft Excel, Microsoft PowerPoint, Microsoft Office
3w
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Communications Intern (Covina, CA, US, 91724)
Covina or Glendora or West Covina or La Puente or Hacienda Heights or City of Industry or Whittier or La Mirada or La Habra or Buena Park or Los Angeles County or Orange County
$20/hr OnsiteMultiple Commitments Available
Nexus Water Group
Nexus Water Group: Operates regulated water and wastewater utility systems across North America.
Undergraduate student in communications/marketing/PR/English required; support communications, social media, internal/external materials, events, and local travel; available Tuesdays and Thursdays for 16 hrs/week.
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