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154 development intern jobs at 117 companies in Lake Forest, CA

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Business Development Intern
New York City or Georgia or California or San Francisco or Turkey or Los Angeles or Dallas or Miami
RemoteFull Time, Internship
Immigrant Invest
Immigrant Invest: A provider of migration and investor services focused on partnership-driven business development.
Final-year student or recent graduate in business-related field; internship or part-time sales/partnerships experience helpful; CRM familiarity; professional English (C1); proactive and analytical.
Salesforce, HubSpot, Pipedrive, CRM
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3mo
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Creature Shop Business Development Intern
Los Angeles or Burbank
OnsiteInternship
The Jim Henson Company
The Jim Henson Company: Produces film, television, and animatronics entertainment content.
College student in the US; 16 hours/week; unpaid; strong writing, social media, and research skills; on-site in Hollywood/Burbank; Canva experience preferred.
Canva, Microsoft Word
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1mo
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Training and Development Intern
Carlsbad, California, United States
$25-$30/hr OnsiteMultiple Commitments Available
Breg
Breg: Manufactures orthopedic bracing and cold therapy rehabilitation products.
Currently pursuing a relevant Bachelor's degree; experience with LMS, instructional technology, or content development preferred. Requires proficiency with Microsoft Outlook, Word, Excel, PowerPoint, and Copilot; strong organization and project management skills.
LMS, Microsoft Outlook, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Copilot, Microsoft SharePoint, SCORM, ChatGPT, Claude
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1mo
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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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2mo
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Affordable Housing Development Intern
Los Angeles, California, United States
$20/hr OnsiteFull Time
Faith and Community Empowerment
Faith and Community Empowerment: Empowering Asian Americans through housing counseling and leadership development.
Current graduate student or recent graduate in Urban Planning, Real Estate Development, Architecture, or related field; able to read site plans; familiar with affordable housing components (LIHTC, vouchers); strong communication; self-starter.
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1mo
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Corporate Development Intern (Summer 2027)
Los Angeles or New York City
$25/hr OnsitePart Time, Internship
Houlihan Lokey
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
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Drama Development Intern - Fall 2026
Culver City, California, United States
$19/hr OnsitePart Time
Sony Pictures Entertainment
Sony Pictures Entertainment: Produces and distributes theatrical movies and television programs globally.
Must be enrolled in an accredited college, pursuing a bachelor's in film or television, available part-time (10-29 hrs/week) onsite, strong written and verbal communication, proactive with passion for TV/film.
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Drama Development Intern - Fall 2026
Culver City, California, United States
$19/hr OnsitePart Time
Sony Pictures Entertainment
Sony Pictures EntertainmentNYSE: SONY: Develops, produces, and distributes films and television programming worldwide.
Enrollment in an accredited college, pursuing a Bachelor's in film or television; strong writing, communication, script analysis, and research skills; available part-time onsite (10-29 hrs/wk) during program dates.
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3w
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Development/Construction Management Intern
Irvine, California, United States
OnsiteInternship
NorthPoint Development
NorthPoint Development: Develops and manages industrial and multi-family real estate assets.
Currently pursuing a bachelor\u0002s degree in civil engineering or construction management; strong communication, organization, attention to detail, and eagerness to learn; comfortable working independently and in teams.
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1w
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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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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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2w
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Hospitality Business Development Internship, Remote
Los Angeles, California, United States
RemotePart Time, Temporary
LAZ Parking
LAZ Parking: Provides comprehensive parking management and facility operational services.
Entry-level internship supporting lead generation, market research, sales outreach; strong communication, Microsoft Office proficiency, CRM use, willingness to learn; bachelor's preferred.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Outlook, CRM
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1mo
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Hospitality Business Development Internship, Remote
Los Angeles, California, United States
RemoteMultiple Commitments Available
LAZ Parking
LAZ Parking: Provides parking management, valet, and shuttle transportation services.
Support lead generation and market research; strong written/verbal communication; proficiency with Microsoft Office; analytical skills; bachelor's degree preferred; prior internship or related experience preferred.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Outlook
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2mo
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Business Development Lead, Manufacturing & Composites
San Clemente, California, United States
$110k-$135k/yr OnsiteFull Time
Swift Engineering
Swift Engineering: Aerospace engineering, advanced manufacturing, and unmanned systems solutions.
2+ YOEBachelor’s degree; 2+ years in business development in engineering/manufacturing/UAS; willing to domestic and international travel; strong aerospace knowledge; strong writing/presentation; collaborative.
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3w
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AI-First Engineering Intern
Los Angeles, California, United States
$20-$25/hr OnsiteInternship
Xsolla
Xsolla: Provides payment and monetization tools for game developers.
Experience using agentic AI coding tools, full-stack development comfort, proof-of-work portfolio (GitHub or deployed projects), currently a CS/software student or recent graduate, strong initiative and communication.
Claude Code, Cursor, Copilot, GitHub, APIs, SDKs, Loom
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2mo
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Director, Business Development - International, Licensing & Wholesale
Anaheim, California, United States
$183k-$210k/yr OnsiteFull Time
Pacsun
Pacsun: Sells lifestyle apparel and accessories for teens and young adults.
8+ YOE8+ Mgmt8–12+ years in international business, wholesale, and/or licensing with proven revenue growth and partner management.
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19h
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Research Intern
Los Angeles, California, United States
OnsiteInternship
Cedars-Sinai
Cedars-Sinai: Provides academic medical care, specialized treatment, and biomedical research.
Undergraduate or graduate student status; 18+ years old; HS diploma or GED; reside in greater Los Angeles area; academic credit or sponsoring funding as applicable.
Polymerase Chain Reaction (PCR), qRT-PCR, Flow cytometry (FACS), Gel electrophoresis
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1mo
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Operations Intern
Lake Forest, California, United States
$17-$18/hr OnsiteMultiple Commitments Available
CellCarta
CellCarta: Provides precision medicine laboratory services for drug development.
College student pursuing a degree (biology/lab science/medicine preferred); follows SOPs to digitize and file biological samples and documentation; attention to detail; ability to lift up to 20 lbs; 20–30 hrs/week, temporary 6 months.
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1w
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Hydrogeology Intern
Lakewood, California, United States
$26-$28/hr FieldPart Time
Water Replenishment District of Southern California
Water Replenishment District of Southern California: Manages and protects groundwater resources for Southern Los Angeles County.
Enrolled full-time in a bachelor’s or graduate program in geology/hydrogeology or related field; able to work 10–24 hrs/week; experience with Microsoft Office; fieldwork and data analysis capabilities required.
Microsoft Outlook, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, ArcGIS
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2mo
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Research Intern
Carlsbad or New York
OnsiteFull Time, Internship
Gemological Institute of America
Gemological Institute of America: Provides gemstone grading, gemology education, and scientific research services.
Actively enrolled in a bachelor’s or graduate degree program; gemology or related science preferred.
MS Office
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