49 Results for

Summer Business Jobs in Upland, CA

Jobs

Seal Beach, CA30+ days ago

Temporary

As a Camp Counselor, you will be an active participant in all camp activities and will assist your Camp Director with a variety of daily tasks, all with the goal of creating a memorable and meaningful camp experience for your campers. We partner with over 230 private clubs all over the country to implement traditional-style day camps for elementary-aged children.

Costa Mesa, CA30+ days ago

Temporary

Corona, California11 days ago

Intern

Overview: PRMG's Summer Internship Program is designed to introduce college students to all the different career paths within the mortgage industry. At the end of the first two weeks, there will be a midterm exam to determine placement for the remaining six weeks of the program.

Perris, CA30+ days ago

We’ve been busy building a best-in-class logistics network that allows us to delight customers by speeding up deliveries, adding services, and reducing damage using our own physical, asset-based warehouses. Develop expertise in your area of focus to become a credible company expert, capable of providing accurate and clear answers to inquiries or knowing where to locate information.

Los Angeles, CA30+ days ago

$22–$25 Per Hour

We’ve been honored as a National Fortune Best Workplace, a Fortune Best Workplace for Women, Millennials, and Parents, and one of America’s Best Employers by Forbes—along with numerous regional recognitions across our 11 offices nationwide. Placement within the listed range depends on many factors, including, but not limited to, years of experience, project size capability (for Construction & Field roles), and internal company equity.

Los Angeles, CA19 days ago

$18.50–$20 Per Hour

The company has a long-standing commitment to corporate social responsibility, including more than $1 billion invested in environmental sustainability; $65 million in charitable giving, education initiatives, and innovative health and wellness programs each year; and $143 million toward the construction of two charter school campuses in California’s Central Valley. Ranked No. 1 on the 2025 PEOPLE® Companies That Care list and one of Fortune® magazine’s “100 Best Companies to Work For” in the U.S., The Wonderful Company is continually recognized for its dedication to the well-being of its workforce, their communities, and the planet.

Riverside, CA30+ days ago

Full-time

Applicants for employment in the US must have work authorization that does not now or in the future require sponsorship of a visa for employment authorization in the United States and with Kroger Co (i.e., H1-B visa, F-1 visa (OPT), TN visa or any other non-immigrant status). Applicants must have work authorization that does not now or in the future require sponsorship of a visa for employment authorization in the United States and with Kroger Co (i.e., H1-B visa, F-1 visa (OPT), TN visa or any other non-immigrant status).

Riverside, CA30+ days ago

Full-time

La Habra, CA30+ days ago

Full-time

From one tiny Cincinnati grocery store more than a century ago, we've grown into what today is the nation's largest grocer with nearly 2,800 stores in 35 states operating under 28 different names. Applicants for employment in the US must have work authorization that does not now or in the future require sponsorship of a visa for employment authorization in the United States and with Kroger Co (i.e., H1-B visa, F-1 visa (OPT), TN visa or any other non-immigrant status).

Irvine, CA30+ days ago

Remote

Success by the end of the internship will be demonstrated by improved CRM data accuracy, streamlined case routing processes, contributions to revenue initiatives, and the intern's ability to independently manage assigned operational tasks. Support CRM data integrity initiatives, including ensuring contracts are accurately attached and reflected within SFDC opportunities to maintain reporting accuracy and revenue visibility.

Irvine, CA30+ days ago

Remote

Pacvue is seeking an Engagement & Development Summer Intern to support key HR initiatives, including building Confluence resources, enhancing our internal employee learning platform (LearnUpon), and contributing to employee development programs. Focus: Build/organize HR Confluence pages, support the expansion of HR L&D content, and provide overall support on ongoing Engagement initiatives.

Los Angeles, California12 days ago

Overview: We’re seeking a talented, self‑motivated undergraduate for a 10‑week summer internship, 40 hours/week, to support our Communications team in developing social media strategy and content, with a primary focus on TikTok. This role will directly interact with key internal partners to create content, report on current social trends, and interact with the loyal Califia Farms audience, while helping to attract and engage new ones.

San Gabriel, CA30+ days ago

We are seeking motivated and enthusiastic individuals who are eager to learn and dedicated to helping our team in providing exceptional services to children diagnosed with autism who are receiving ABA intervention at our beautiful learning center. Learning and Development: Take advantage of countless learning opportunities throughout the internship period and and gain valuable skills and knowledge about developmental learning challenges, treatment assessment and intervention, practice management, health care, and administrative functions.

Brea, CA30+ days ago

Kirkhill, Inc. a wholly-owned subsidiary of Transdigm, is a leading diversified manufacturer of highly engineered, organic, and in-organic elastomer based products. Optimize all aspects of manufacturing process by identifying opportunities and applying simpler, faster, more cost effective and reliable methods in all phases of manufacturing process.

Irvine, CA30+ days ago

Remote

The Product Marketing Intern will support growth initiatives for Helium 10 Ads by helping execute high priority marketing programs and gathering insights that improve adoption. Pacvue's internship program runs across two 9-week cohorts, and candidates may choose the option that best fits their schedule: Cohort 1 (May 18 – July 17) or Cohort 2 (June 15 – August 14).

Irvine, CA30+ days ago

$54,000–$72,000 Per Year

Current enrolled at an accredited university for the duration of the Internship project pursuing a Bachelor’s degree in Environmental Health and Safety, Environmental Sciences, Occupational Health and Safety, Chemical Engineering, Industrial Engineering, Environmental Science, or a related field. + Day‑to‑day work includes reviewing air quality data, conducting gap and applicability assessments, tracking corrective actions, maintaining documentation, and supporting verification activities.

New!

Los Angeles, CA5 days ago

$100,000–$120,000

A Fortune 500 technology company (representative of our employer network) is hiring a Corporate Development Analyst to support M&A sourcing, transaction evaluation, strategy development, and partnership analyses. This Corporate Development Analyst posting is an example of the roles inside our private job board — premium strategy & M&A positions that Career Launch AI members get exclusive access to.

Los Angeles, California19 days ago

$26–$29 Per Hour

Irvine, CA30+ days ago

$26–$47.50 Per Hour

At Skyworks, you will find a fast-paced environment with a strong focus on global collaboration, minimal layers of management, and the freedom to make meaningful contributions in a setting that encourages creative thinking. The candidate will support activities that contribute to making forward looking decisions with the demand plan and communicates those decisions to stakeholders including Supply Chain, Marketing, and our external customers.

New!

Irvine, CA3 days ago

$26–$47.50 Per Hour

We are looking for a Supply Chain & Demand Management Summer/Fall Co-Op to join the team in Irvine, CA, for a 6-month period starting in June 2026 and ending in December 2026. The candidate will support activities that contribute to making forward looking decisions with the demand plan and communicates those decisions to stakeholders including Supply Chain, Marketing, and our external customers.

New!

Ontario, CA6 days ago

$17–$17.75 Per Hour

Pay Transparency: To encourage pay transparency, promote pay equity, and proactively address regulations, ASICS America Corporation will comply with all applicable state or local laws or regulations which require employers to provide wage or salary range information to job applicants and employees. Position Purpose / Summary Statement: The Team Player is to deliver a great client experience through assessing needs, product education and engaging communication to provide a personalized shopping environment.

New!

Los Angeles, CA5 days ago

$270,000–$400,000

A leading middle-market or upper-middle-market private equity firm is seeking a Senior Associate or VP to drive deal execution, diligence, and portfolio management. Private Equity Senior Associate / Vice President – Career Launch AI Network.

Long Beach, CA30+ days ago

If hired, you will work in person in a schooled-aged camp setting to provide supervision, care, program delivery, and services per Steve & Kate's Camp and Bright Horizons’ policies, procedures and guidance, in compliance with any applicable laws and regulations, and in a manner that will ensure the safety of children in Steve & Kate's Camp's care and the employee. As the youngest campers' lead counselor, you’ll utilize resources provided by S&K to implement and manage the structure of the camp day, manage a team of support staff, and generally make sure that we are meeting all the baseline needs of our little ones.

Los Angeles, CA17 days ago

Chaminade is an independent co-educational Catholic school serving approximately 2,000 students in grades 6-12 at our two beautiful campuses located in the San Fernando Valley area of Los Angeles. The Summer Camp Teacher is responsible for providing leadership, oversight and support to the Chaminade Center for Excellence Summer Program while ensuring the overall well-being and safety of the campers and the activities in the program.

Irvine, CA30+ days ago

$20–$26 Per Hour

We are changing the game by providing high quality and regularly scheduled supervisory support which help you make a difference in your clients’ lives. Additionally, we’re looking for someone who values work-life balance and want to make meaningful changes to people’s lives in a transparent and rewarding environment.

Seal Beach, CA30+ days ago

Temporary

As you manage campers, their families, club logistics, your small staff team and other camp happenings, you will be truly supported by the KE Camps Year-Round Office all the way. Our Camp Directors have real ownership over their camp programs and enjoy infusing their own creativity and talents into their weekly schedules.

Los Angeles, CA30+ days ago

$19–$23 Per Hour

We host a variety of programs for the community, including an early childhood center, basketball leagues and classes, swim lessons, summer and winter day camp, fitness classes, family holiday programs, teen leadership and Israel programs, senior wellness and adult programs. Through specialty tracks, enrichment activities, and community-building programming, JCamp fosters creativity, confidence, connection, and a vibrant, inclusive Jewish community.

Los Angeles, CA30+ days ago

Full-time

As an intern with A&M Tax, responsibilities include: Perform special consulting projects such as preparing year-end tax projections, identifying and researching planning ideas, and preparing financial analysis to obtain optimal tax minimization strategies for our clients. Our people and our services are the gateway to a variety of specialized and customized tax solutions that help to improve compliance with tax authorities, while maintaining each client's overall tax risk profile and business success.

Los Angeles, CA30+ days ago

Our summer programs include public speaking camps, college admissions prep programs, science camps, summer acting camp, writing camps, computer camp, leadership camp, video production camp, and college tours. The Personal Statement/College Counseling Instructor is responsible for guiding students through two components of our College Admissions Prep Camp Instruction: First, they will help each student complete 1-2 longer or several shorter personal statement responses so that are ready or nearly ready for submission with their college applications.

New!

Seal Beach, CA3 days ago

Administer first aid in the event of injury, rescue swimmers in distress or danger of drowning, and administer CPR and/or artificial respiration, if necessary . We partner with over 230 private clubs all over the country to implement traditional-style day camps for elementary-aged children.

New!

Irvine, CA3 days ago

$26–$47.50 Per Hour

We are looking for a Supply Chain & Demand Management Summer/Fall Co-Op to join the team in Irvine, CA, for a 6-month period starting in June 2026 and ending in December 2026. At Skyworks, you will find a fast-paced environment with a strong focus on global collaboration, minimal layers of management, and the freedom to make meaningful contributions in a setting that encourages creative thinking.

Irvine, CA30+ days ago

TRL11 is a venture backed deep tech / defense tech startup bringing cutting-edge video technology to Aerospace applications. Summer internships typically cover a wide range of disciplines, including mechanical, electrical, optical, manufacturing, software, and test engineering.

New!

Santa Ana, CA3 days ago

$23.31–$34.97 Per Hour

Performs a variety of tasks which may be specific to a particular functional area of activity such as preparing reports, tracking and evaluating results, coordinating program developments, answering the phone, receiving messages, transmitting information, making copies, editing documents, handling routine inquires and making appointments. Staffing/employment agencies who have fee agreements with HNTB must submit applicants to the designated HNTB recruiter to be eligible for placement fees.

Los Angeles, CA17 days ago

Chaminade is an independent co-educational Catholic school serving approximately 2,000 students in grades 6-12 at our two beautiful campuses located in the San Fernando Valley area of Los Angeles. This tradition, grounded in the values of Jesus, educates the whole person while emphasizing family spirit in a nurturing, caring environment, attentive to the moral, spiritual and religious development of students.

Fountain Valley, California22 days ago

The Quest model techniques used in our program aim to facilitate building social skills, communication skills, impulse control, and self-monitoring for children and young adults. Our staff aims to create programs that promote the generalization of these skills tin order to set our clients up for success in a wide variety of environments and situations.

New!

Rialto, CA6 days ago

$66,600–$79,800 Per Year

As an IDP, you will be exposed to various critical areas, including the core Aggregate functions of Mine Planning, Process Improvements, Quality and Reliability, Inventory Maintenance, and Data Management. Technical Proficiency: Previous experience from individuals who share our passion for the industry and have gained valuable insights through internships, co-op programs, or university projects.

Los Angeles, CA30+ days ago

Open for applications from excellent candidates who are seeking career paths in fashion advertising, consumer products and/or marketing. Our summer internship program is highly competitive as nearly 1k applications are received across the United States for 8 spots.

Arcadia, CA30+ days ago

$18–$20 Per Hour

As a Camp Leader, you’ll guide groups of children through exciting daily activities while helping create a safe, supportive, and fun environment where kids can learn, play, and build friendships. We’re looking for energetic, responsible Camp Leaders who love working with kids and enjoy leading fun activities in a high-energy environment.

Yorba Linda, CA30+ days ago

School-year internships may offer a broader overview of ministry, including administrative responsibilities, event planning, team-based ministry experiences, volunteer development, and program planning and implementation. Throughout the internship, experienced leaders invest in your personal and spiritual growth while you engage in diverse areas of ministry alongside a community of fellow interns.

Irvine, California19 days ago

Baker Tilly Advisory Group, LP and Baker Tilly US, LLP, trading as Baker Tilly, are independent members of Baker Tilly International, a worldwide network of independent accounting and business advisory firms in 141 territories, with 43,000 professionals and a combined worldwide revenue of $5.2 billion. Baker Tilly is a leading advisory, tax and assurance firm, providing clients with a genuine coast-to-coast and global advantage in major regions of the U.S. and in many of the world's leading financial centers - New York, London, San Francisco, Los Angeles, Chicago and Boston.

Santa Ana, CA23 days ago

Customer service, retail, hospitality, camp counselors, coaches, school support staff, Medical transport drivers, nursing home drivers, patient transfer specialists, trades & mechanics, DPW employees. Every day, our professional drivers safely transport students to and from school, field trips, and extracurricular activities while enjoying flexible, rewarding careers with industry-leading training and benefits.

Pomona, CA30+ days ago

Customer service, retail, hospitality, camp counselors, coaches, school support staff, medical transport drivers, nursing home drivers, patient transfer specialists, trades & mechanics, DPW employees. Every day, our professional drivers safely transport students to and from school, field trips, and extracurricular activities while enjoying flexible, rewarding careers with industry-leading training and benefits.

Chino, CA30+ days ago

Customer service, retail, hospitality, camp counselors, coaches, school support staff, Medical transport drivers, nursing home drivers, patient transfer specialists, trades & mechanics. Every day, our professional drivers safely transport students to and from school, field trips, and extracurricular activities while enjoying flexible, rewarding careers with industry-leading training and benefits.

Santa Ana, CA30+ days ago

Customer service, retail, hospitality, camp counselors, coaches, school support staff, Medical transport drivers, nursing home drivers, patient transfer specialists, trades & mechanics. Summit School Services is immediately hiring School Bus Drivers and offering CDL training, no nights or weekends, and reliable split-hour schedules that work around your day.

Rosemead, CA30+ days ago

$27.12–$29.52 Per Hour

Customer service, retail, hospitality, camp counselors, coaches, school support staff, Medical transport drivers, nursing home drivers, patient transfer specialists, trades & mechanics. Summit School Services is immediately hiring School Bus Drivers and offering CDL training, no nights or weekends, and reliable split-hour schedules that work around your day.

Pomona, CA30+ days ago

Customer service, retail, hospitality, camp counselors, coaches, school support staff, Medical transport drivers, nursing home drivers, patient transfer specialists, trades & mechanics. Summit School Services is immediately hiring School Bus Drivers and offering CDL training, no nights or weekends, and reliable split-hour schedules that work around your day.

Irvine, CA30+ days ago

Customer service, retail, hospitality, camp counselors, coaches, school support staff, Medical transport drivers, nursing home drivers, patient transfer specialists, trades & mechanics. Summit School Services is immediately hiring School Bus Drivers and offering CDL training, no nights or weekends, and reliable split-hour schedules that work around your day.

Perris, CA30+ days ago

$26.30–$33.57 Per Hour

Customer service, retail, hospitality, camp counselors, coaches, school support staff, Medical transport drivers, nursing home drivers, patient transfer specialists, trades & mechanics. Summit School Services is immediately hiring School Bus Drivers and offering CDL training, no nights or weekends, and reliable split-hour schedules that work around your day.

Los Angeles, CA30+ days ago

Branded Content: Creates sponsored content with brand partners, combining creative ideas and strategy to deliver impactful campaigns across video, social, and live experiences. Unscripted: Creates formats, series, and documentaries that spotlight greatness across sports, music, and entertainment, including MegaCasts like the Emmy Award-winning ManningCast for ESPN2.

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Summer Business Jobs in Upland, CA

Summer Day Camp Counselor-Intern KE Camps

Summer Day Camp Counselor KE Camps

Summer Internship Mortgage Paramount Residential Mortgage Group

Supply Chain Summer Internship Wayfair

Construction Finance - Summer Internship Shawmut

Wonderful Scholar Summer Internship, Agency The Wonderful Company

Summer 2026 Human Resource Intern Supply Chain - Riverside Kroger Co.

Summer 2026 Human Resource Intern Supply Chain - Riverside Kroger Supply Chain

Summer 2026 Maintenance Intern- Supply Chain Kroger Co.

Revenue Operations Analyst Summer Intern Pacvue

Engagement & Development Summer Intern Pacvue

Social Media Summer Intern Califia Farms, LLC

2026 Summer Intern (Non-Paid) FirstSteps for Kids, Inc.

Rotation Summer Internship Kirkhill Inc.

Product Marketing Summer Intern Helium 10

Environmental Health and Safety (EHS) Internship, Summer 2026 Edwards Lifesciences

Corporate Development Summer Analyst Career Launch AI

Student Architectural Intern | Summer 2026 - Los Angeles Aviation Corgan

Supply Chain & Demand Management Summer/Fall Co-Op (Irvine, CA, US) Skyworks Solutions, Inc

Supply Chain & Demand Management Summer/Fall Co-Op Skyworks Solutions

Summer Seasonal Team Player (Sales Associate) - Ontario Asics

Private Equity Senior Summer Associate Career Launch AI

Summer Camp Youngest Camper Counselor Lead - Long Beach Steve & Kate's Camp

Summer Camp Teacher (Internal Candidates Only) Chaminade College Preparatory

ABA Positions! Hiring ASAP for summer! Part Time Behavior Technicians! POP THERAPIES INC

Summer Day Camp Director KE Camps

Summer Camp Unit Head JCCs of North America

Intern, Core Tax - Los Angeles Summer 2027 Alvarez & Marsal Tax, LLC

Personal Statement Writing Instructor/College Counselor - Summer 2026 Education Unlimited

Summer Day Camp Lifeguard KE Camps

Supply Chain & Demand Management Summer/Fall Co-Op Skyworks

Summer 2025 Engineering Internship TRL11, Inc.

WED Marketing Intern (For Current/Previous HNTB Interns ONLY) (Summer 2026) HNTB

Head Camp Counselor (Internal Candidates Only) Chaminade College Preparatory

Therapeutic Camp Counselor Quest Therapeutic Camps of Southern California

PROFESSIONAL INTERNSHIP DEVELOPMENT AGGREGATES Cemex

Dress A Med - Fashion Marketing & Advertising - Paid Internship Dress A Med

Little Land Camp Leader Little Land Pediatric Therapy & Play Gym

Internship Friends Church

Temporary Senior Campus Recruiter Baker Tilly Advisory Group, LP

Fully Credentialed School Bus CDL Drivers Summit School Services

Fully Credentialed School Bus CDL Drivers (Pomona, CA) Summit School Services

School Bus Driver-No Experience Necessary – Training Provided (Hiring location is in Pomona, CA) Summit School Services

School Bus Driver– No Experience Necessary – Training Provided Summit School Services

School Bus Driver - No Experience Required - Training Provided Summit School Services

School Bus Driver-No Experience Necessary – Training Provided Summit School Services

School Bus Driver – No Experience Necessary – Training Provided Summit School Services

School Bus Driver-No Exp Needed-Training provided- Valverde School District (Perris) Summit School Services

2026 Internship Program Omaha Productions

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