56 summer intern jobs at 30 companies in Upland, CA
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Summer Intern
Los Angeles, California, United States
$20/hrOnsiteInternship
JM Eagle: Manufacturer of plastic and PVC pipes for global infrastructure.
Pursuing a Bachelor’s degree in Business, Finance, Supply Chain, Marketing; strong communication; ability to manage multiple priorities; detail-oriented; proficient with MS Office.
Plastpro: Manufacturer of fiberglass entry doors and composite door systems.
Pursuing a Bachelor's degree in Business, Finance, Supply Chain, Marketing, or related field; strong communication; multi-priority management; detail-oriented; proficient in Microsoft Office.
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/yrOnsiteFull Time, Internship
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.
Washington or Tampa or New York City or Chicago or Houston or Boston or Emeryville or Pittsburgh or Los Angeles
$25-$40/hrOnsiteFull Time
Berkeley Research Group: Provides expert testimony and specialized business consulting services.
Progression toward a Bachelors or Masters (grad 2027–2028), strong quantitative skills, 3.6+ GPA preferred, experience with SQL/R/Stata/SAS/Python/Snowflake/Microsoft Excel, legal U.S. work authorization required.
SQL, R, Stata, SAS, Python, Snowflake, Microsoft Excel
WNC: Real estate investment firm specializing in affordable housing solutions.
0+ YOEUndergraduate students or recent graduates seeking summer internship opportunities in real estate, business, finance, or accounting; strong interest in real estate and related fields.
Chicago or New York City or San Francisco or Santa Monica or Washington
$10k/bi-wkHybridInternship, Full Time
Natural Resources Defense Council: International nonprofit organization dedicated to protecting the environment.
Current law student (2L or part-time/dual-degree with ≥1 year), strong legal writing, research, analytical and oral communication skills, teamwork, commitment to public service, and openness to feedback.
Rancho Cucamonga or Peachtree City or Mount Prospect or Greenfield or Lowell or Mentor or Painesville or Fairport Harbor or Miamisburg or Oak Harbor or Neenah
$26-$29/hrOnsiteInternship
Avery DennisonNYSE: AVY: Manufacturer of materials science and digital identification products.
Pursuing a Bachelor’s in engineering (chemical/mechanical/industrial preferred), previous internship or relevant experience, willing to relocate, reliable transportation, pass background and drug screening; sponsorship not available.
Fridley or Tempe or Eatontown or Santa Rosa or Lafayette or Boulder or Plymouth or Mounds View or Irvine or North Haven or Memphis or Newton or Dexter or Santa Ana or Mansfield or Fort Worth or Minneapolis or Brooklyn Center or Jacksonville or Boston or Brooklyn Park
$27-$45/hrOnsiteFull Time
MedtronicNew York Stock Exchange: MDT: Develops and manufactures medical devices and digital health solutions.
Enrolled in BS/MS engineering (biomedical, mechanical, electrical, industrial, materials, computer or related) with expected graduation 2027–2029; U.S. work authorization required; minimum 3.0 GPA preferred; prior engineering coursework/projects preferred.
Central OC Young Life — Summer 2026 Internship Program
Tustin or Orange County
$18/hrOnsitePart Time, Internship
Young Life: Provides Christian youth outreach and adventure-based camping programs.
Must sign Young Life Statement of Faith; organized, self-motivated, creative, detail-oriented, strong communicator, comfortable with technology and social media; experience with Canva/Google Workspace a plus.
Google Drive, Google Workspace, Linktree, Emma, Instagram, Canva
GuessNYSE: GES: Designs and retails contemporary fashion apparel and accessories worldwide.
0+ YOEEnrolled college students in good academic standing; high school diploma minimum; 0-2 years experience; internship provides administrative and functional support in advertising; ten-week paid program at Los Angeles HQ; no relocation assistance.
TikTok: Global short-form video hosting and social media platform.
Pursuing bachelor's or master's, available for 12-week summer 2027 internship, familiarity with social media trends, strong stakeholder and project management, independent, analytical preferred.
Houlihan LokeyNYSE: HLI: Provides global investment banking and financial restructuring advisory services.
Must be a junior or senior pursuing a Bachelor's (Finance, Accounting, or Economics preferred); Excel, PowerPoint, Word proficiency; basic financial modeling knowledge; strong communication; internship experience preferred.
Microsoft Excel, Microsoft PowerPoint, Microsoft Word, Salesforce, PitchBook
Beachwood or Woodmere or Grand Rapids or Plano or Dana Point
$25/hrHybridInternship, Full Time
MarshBerry: Investment banking and consulting for the financial services industry.
Senior-level undergraduate in Finance or Accounting; strong Excel/PowerPoint/Word/Outlook skills; working knowledge of financial statements; strong analytical and communication skills; must be authorized to work in the U.S. without sponsorship.
Microsoft Excel, Microsoft Word, Microsoft PowerPoint, Microsoft Outlook
Houlihan LokeyNYSE: HLI: Global investment bank providing financial advisory and restructuring services.
Junior or senior in a Bachelor's program (Finance, Accounting, or Economics); proficient in Microsoft Excel, PowerPoint, Word; experience with Salesforce and Pitchbook preferred; basic financial modeling and accounting knowledge; strong communication and work ethic.
Salesforce, Pitchbook, Microsoft Excel, Microsoft PowerPoint, Microsoft Word
Sacramento or Oakland or Commerce or San Diego or Goodyear or Manassas
$21-$28/hrOnsiteFull Time
Helix Electric: Provides electrical contracting and design-build services for complex projects.
Enrolled in a bachelor’s degree program; construction or engineering focus; internship or related experience preferred; strong communication, math, and organizational skills.
Pacific Life: Provides life insurance, annuities, and investment products for financial security.
Enrollment in an undergraduate degree in Mathematics, Statistics, Economics, Finance, or Actuarial Science; completion of at least 1 Society of Actuaries exam; strong analytical and communication skills.
Atlanta or Chicago or Houston or Los Angeles or New York or San Francisco or Washington
$30-$35/hrOnsiteInternship
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.
Los Angeles or Chicago or New York or Philadelphia
HybridInternship
KPMG: Global professional services network providing audit, tax, and advisory.
Enrolled undergraduate or graduate student in business/finance/technology-related major, GPA≥3.0, strong analytical and communication skills, ability to obtain cloud-technology certification, authorized to work in the U.S.
Oracle, Workday, SAP, Microsoft Office, Microsoft Excel, Gen AI, AI
Colorado Springs or Irvine or Longmont or Fremont or Rochester or San Jose
$34-$47/hrHybridInternship
Western DigitalNASDAQ: WDC: Design and manufacture data storage devices and systems.
0+ YOEEarly-career candidates pursuing or holding technical degrees in engineering or related fields; experience via coursework, internships, projects; familiarity with programming, embedded systems, digital logic, or hardware design; strong analytical and communication skills.