82 Results for

Summer Jobs in Upland, CA

Jobs

New!

Los Angeles, CA5 days ago

Full-time
Employee

Want to live in the mountains for the summer and/or fall season (short-term living accommodations available on-site for $170/week if you are from outside the area, that includes: dormitory style rooms, utilities, internet, laundry, 3 daily buffet style meals). You’ll help create a welcoming, comfortable stay for guests by keeping cabins, lodge rooms, and shared spaces clean and ready.

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.

Seal Beach, CA30+ days ago

Temporary

Ontario, CA30+ days ago

To be considered for the Cardinal Health Summer 2026 Internship Program, candidates should meet a combination of the following criteria: Currently pursuing a bachelor’s degree in Business Administration, Logistics, Management, Supply Chain, Operations Management, or related field, preferred. Interns participate in social, team-building, and community service events designed to build a strong peer network and enrich the overall internship experience.

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, CA12 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.

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.

Seal Beach, CA30+ days ago

Temporary

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!

Corona, California6 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.

Los Angeles, CA14 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.

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.

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.

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

CBRE IA&R is the only 100% dedicated Real Estate Fund and Property accounting business supporting Global and Pan-European coordination for clients providing Fund & SPV Accounting, Investor Reporting, and Performance Measurement services to real estate investment companies, sovereign wealth funds, and other institutional investors in key financial markets. CBRE serves clients through four business segments: Advisory (leasing, sales, debt origination, mortgage serving, valuations); Building Operations & Experience (facilities management, property management, flex space & experience); Project Management (program management, project management, cost consulting); Real Estate Investments (investment management, development).

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.

Irvine, CA30+ days ago

$16–$23 Per Hour

At TCL, we are driven by a commitment to innovation in consumer technology, empowering millions worldwide to Inspire Greatness through our award-winning portfolio of home entertainment, audio, mobile, and home comfort solutions. Our internship program is designed for students who want meaningful exposure to how a global organization operates and who are interested in building practical, transferable skills in a professional environment.

New!

Los Angeles, CA5 days ago

$18–$24 Per Hour

Job Types: Seasonal / Temporary Pay Range: $18.00 - $24.00 per hour Locations: 6-7 sites across Greater Los Angeles (including Mid-City, Hancock Park, Third Street, West LA). Strength and endurance required to maintain constant supervision of campers, including prolonged standing, some bending, stooping, walking long distances, and stretching.

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).

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 primary responsibility of the SAT or PSAT Instructor is to guide students through the Education Unlimited SAT curriculum in a classroom setting and to motivate and encourage students to improve their test-taking abilities.

Los Angeles, CA30+ days ago

You'll collaborate with mechanical, software, and simulation engineers to analyze large in-situ data sets and post-print material characteristics, contributing to rapid iteration and continuous improvement of the printing technology using data-driven and machine-learning-enabled approaches. Assist the Process Engineering team in developing a deep understanding of the metal additive process and hardware operation by analyzing massive in-situ data sets to gain insight into physical mechanisms of the printing process.

Los Angeles, CA30+ days ago

Using first-principles thinking, you will help define test methods, evaluate solutions, iterate quickly, and synthesize information from engineering drawings, in-situ machine data, post-processing results, and inspection data to draw conclusions that improve printing and downstream machining processes. As an Additive Engineering Intern at Freeform, you will contribute to the development and scaling of our advanced metal 3D printing processes, including design for additive manufacturing (DFAM) feedback, print file preparation, toolpath automation, part quality analysis, and end-to-end process improvement.

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. We are seeking a 2026 Summer-Fall Co-Op (Jun to Dec) to work with our advanced development team to enable state-of-the-art semiconductor devices for 5G applications.

Los Angeles, California7 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.

Los Angeles, CA30+ days ago

$25–$48 Per Hour

The wage range for this role takes into account the wide range of factors that are considered in making compensation decisions including but not limited to skill sets; experience and training; licensure and certifications; and other business and organizational needs. As a Deloitte Tax intern, you'll work with diverse and talented teams to help clients analyze the tax effect of complex decisions, reduce overall tax rates, and pursue performance objectives.

Los Angeles, CA30+ days ago

Arrowhead is leading the field in bringing the promise of RNAi to address diseases outside of the liver, and our clinical pipeline includes disease targets in the liver and lung with a promising pipeline of preclinical candidates. Using a broad portfolio of RNA chemistries and efficient modes of delivery, Arrowhead therapies trigger the RNA interference mechanism to induce rapid, deep, and durable knockdown of target genes.

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.

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.

Los Angeles, CA14 days ago

$100,000–$150,000

If you're pursuing a career in Investment Banking, Private Equity, Capital Markets, or Corporate Finance, this role represents the type of accelerated opportunity we help you land — faster, with personalized recruiter outreach and AI-powered support. This Investment Banking Analyst role is an example of real opportunities available inside the Career Launch AI Private Job Board, which includes: Exclusive roles from employers who recruit directly through Career Launch AI.

Los Angeles, CA30+ days ago

3D printing experience is not required to be successful here - rather we look for smart, motivated, collaborative engineers who love solving hard problems and creating amazing technology! Experience with high-speed data acquisition systems, high-accuracy motion systems, high-speed scanning systems, or similar camera/telemetry-based control systems .

Los Angeles, CA30+ days ago

$115,000–$125,000 Per Year

You'll work with a talented engineering team from some of the world's most innovative companies across a range of projects including controls, high-speed data acquisition, high-performance computing (GPU's and FPGA's), and geometry processing pipelines that enable precise and fully automated manufacturing at scale. The ideal candidate thrives in ambiguity, takes initiative on complex technical problems, and works collaboratively across disciplines to deliver robust, high-performance software solutions.

Los Angeles, CA30+ days ago

$90,000–$95,000 Per Year

You'll work with a talented engineering team from some of the world's most innovative companies across a range of projects to develop and refine the processes, tooling, and CNC machining workflows that enable precision manufacturing at speed and scale. Demonstrated indicators of excellence and/or achieving success against adversity (i.e. top academic performance, leadership in engineering clubs, first-generation college student, or other examples of resilience and achievement) .

Los Angeles, CA30+ days ago

$90,000–$95,000 Per Year

Demonstrated indicators of excellence and/or achieving success against adversity (i.e. top academic performance, leadership in engineering clubs, first-generation college student, or other examples of resilience and achievement) . The ideal candidate thrives in ambiguity, can drive technically challenging projects with minimal oversight, and collaborates effectively across disciplines to deliver novel hardware solutions at scale.

Los Angeles, CA30+ days ago

$90,000–$95,000 Per Year

You'll work with a talented engineering team from some of the world's most innovative companies on electrical system design, development, and integration efforts across the factory systems, with a specific focus on PCB and compute system design. Demonstrated indicators of excellence and/or achieving success against adversity (i.e. top academic performance, leadership in engineering clubs, first-generation college student, or other examples of resilience and achievement) .

Garden Grove, CA25 days ago

You’ll be an essential part of our dynamic workforce as an independent contractor, ready to respond and commute to on-site work opportunities at nearby K-12 schools and nonprofits via the BrightBee app. Instructors also receive ongoing coaching and periodic refresher training (a few hours each semester) to ensure confidence in classroom delivery and continued program quality.

Los Angeles, California14 days ago

$26–$29 Per Hour

New!

Irvine, CA6 days ago

You’ll focus on creating meaningful connections and fun summer experiences with children, while we provide the support of a caring team and opportunities to make a real difference. Be Playful – Spend your summer enjoying games, crafts, outdoor play, and creative activities alongside kids.

Brea Olinda, CA30+ days ago

$38–$45 Per Hour

Full time assignments looking for a committed nurse to support 1x1 through the end of the school year, potential to support with summer school, and return in the fall in good standing. Each year we have gradually taken over the school nursing market with our qualified nurses, which is a product of the extra clinical support we provide anyone on our staff.

New!

Ontario, CA1 day ago

$17–$17.75 Per Hour

The role involves providing exceptional customer service, assessing needs, educating on product features, and maintaining store appearance. Ideal for entry-level candidates with a customer-focused attitude seeking seasonal employment in a retail setting.

New!

Los Angeles, CA4 days ago

Note: This position reports to our office in Marina Del Rey, CA and we are not currently looking to hire for any remote positions. This candidate is a self-starter with a passion for marketing, as well as excellent organizational and time-management skills.

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).

Rancho Cucamonga, CA30+ days ago

$18–$20

As a Swim Instructor, you'll teach essential swimming skills, instill confidence, promote a love for swimming, and ensure a safe and supportive learning environment. In this role, you'll provide high-quality swim instruction to individuals or groups, focusing on water safety, stroke development, and overall aquatic skills in Rancho Cucamonga.

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.

Los Angeles, CA30+ days ago

In the U.S., Grant Thornton delivers professional services through two specialized entities: Grant Thornton LLP, a licensed, certified public accounting (CPA) firm that provides audit and assurance services ― and Grant Thornton Advisors LLC (not a licensed CPA firm), which exclusively provides non-attest offerings, including tax and advisory services. With $2.7 billion in revenues and more than 50 offices spanning the U.S., Ireland and other territories, the platform delivers a singular client experience that includes enhanced solutions and capabilities, backed by powerful technologies and a roster of 12,000 quality-driven professionals enjoying exceptional career-growth opportunities and a distinctive cross-border culture.

Los Angeles, CA30+ days ago

Orange, CA17 days ago

Operations: Lead groups of 15–20 students, transport provided culinary kits, and teach fun recipes from our curriculum like: i.e. Black Bean Quesadillas and Crispy Chicken Tenders. We’ve taught over 75,000 students since 2010 and are looking for passionate individuals to join our team of 200+ Chef Teachers.

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Summer Jobs in Upland, CA

Housekeeping Staff (Summer and/or Fall 2026). Live and Work in the Colorado Rockies YMCA of the Rockies

Summer Day Camp Counselor-Intern KE Camps

Summer Day Camp Counselor KE Camps

Operations Internship (Summer 2026) Cardinal Health

Summer Day Camp Director KE Camps

Summer Camp Teacher (Internal Candidates Only) Chaminade College Preparatory

Summer Camp Unit Head JCCs of North America

Summer Day Camp Lifeguard KE Camps

Summer Internship Mortgage Paramount Residential Mortgage Group

Wonderful Scholar Summer Internship, Agency The Wonderful Company

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

Summer 2025 Engineering Internship TRL11, Inc.

Supply Chain Summer Internship Wayfair

Digital Business Operations Summer Intern 2026 (IA&R) CBRE

Investment Accounting Summer Intern 2026 (IA&R) CBRE

Construction Finance - Summer Internship Shawmut

[INTERNSHIPS & TRAINING] Summer 2026 Inspire Greatness Intern Program (On-site, Irvine, CA) - UCI TTE Technology Inc

Summer Camp Coach (Counselor) LA - Midcity, West LA, & West Hollywood Areas Got Game Camp

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.

SAT Instructor - Summer 2026 Education Unlimited

Process Engineering Internship/Co-Op (Summer/Fall 2026) Freeform

Additive Engineering Internship/Co-Op (Summer/Fall 2026) Freeform

RF Design Summer/Fall Co-Op (June '26 - Dec '26) Skyworks

Social Media Summer Intern Califia Farms, LLC

Tax Consultant Intern (Japanese Services Group) (Summer 2026) Deloitte

Summer Intern, Medical Publications & Communications Arrowhead Pharmaceuticals

Revenue Operations Analyst Summer Intern Pacvue

Engagement & Development Summer Intern Pacvue

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

Rotation Summer Internship Kirkhill Inc.

Investment Banking Summer Analyst Career Launch AI

Electrical Engineering Intern (Summer 2026) Freeform

Software Engineer, C++ (New Grad Summer 2026) Freeform

Manufacturing Engineer (New Grad Summer 2026) Freeform

Mechanical Engineer (New Grad Summer 2026) Freeform

Electrical Engineer (New Grad Summer 2026) Freeform

Summer Camp Group Leader with Rainbow Chef's Academy BrightBee Inc.

Student Architectural Intern | Summer 2026 - Los Angeles Aviation Corgan

Children’s Summer Respite Support Jovie of CA, WA, and MN

RN - Registered Nurse - 1:1 School Nurse with Summer School Ro Health, LLC

Summer Seasonal Team Player (Sales Associate) - Ontario Asics

Marketing Intern - Summer 2026 Boys Lie

Product Marketing Summer Intern Helium 10

Summer Swim Instructor Premier Swim Academy - Rancho Cucamonga

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

Tax Intern - Summer 2027 Grant Thornton

Risk Advisory Intern - Summer 2026 Grant Thornton

Summer School Cooking Teacher LIFT Enrichment

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