87 Results for

Summer Jobs in Ontario, CA

Jobs

New!

Chino, CA1 day ago

As a Theatre Camp Counselor, you'll play a key role in guiding campers through exciting daily activities while helping them build confidence, creativity, teamwork, and friendships in a safe and supportive environment. We're looking for energetic, creative, and responsible Theatre Camp Counselors to help bring the magic of performing arts to life this summer!

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

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.

Corona, California16 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, CA30+ days ago

$19–$20 Per Hour

Wonderful Pistachios & Almonds is part of The Wonderful Company, a privately held $4.8 billion company, which also has other No. 1 brands such as Wonderful Halos, FIJI Water, POM Wonderful, JUSTIN Wine, and Teleflora. Located in Californias Central Valley, our nuts are Non-GMO Project Verified and sustainably harvested, providing a smart, healthy choice for consumers around the world.

Los Angeles, CA30+ days ago

$19–$20 Per Hour

About The Wonderful Company: Wonderful Pistachios & Almonds is part of The Wonderful Company, a privately held $4.8 billion company, which also has other No. 1 brands such as Wonderful Halos, FIJI Water, POM Wonderful, JUSTIN Wine, and Teleflora. About Wonderful Pistachios & Almonds: Wonderful Pistachios & Almonds is the world's largest vertically integrated pistachio and almond grower and processor.

Irvine, CA30+ days ago

Skills You Will NeedSelf-motivated with a Positive Attitude: For example, consistently taking the initiative to tackle new challenges and maintaining a positive outlook even in difficult situationsSincere Passion for Engaging with People: Possess the communication and organizational skills to matchProblem-Solver and Results-Driven: Able to solve problems and drive results through othersStrong Business Acumen: Capable of executing plans and strategies, with a curiosity about developing a modern retail businessWho You Are In your junior year, on your way to earning a bachelor's degree from an accredited university. Whether you're helping a customer find the perfect gift, streamlining operations in one of our distribution centers, enhancing our online shopping experience, buying in-style and on-trend merchandise to outfit our customers, or designing a balloon for the Thanksgiving Day Parade, we offer unique opportunities to be part of some of the most memorable moments in people's lives.

Los Angeles, CA24 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

$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.

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.

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).

New!

Irvine, CA1 day ago

$45–$60 Per Hour

With a decade-long track record of deploying solutions in the field, winning DARPA challenge segments, and bringing expertise from organizations like DeepMind, NASA JPL, Boston Dynamics, NVIDIA, Amazon, Tesla Autopilot, Cruise Self-Driving, Zoox, Toyota Research Institute, and SpaceX, we are set to achieve our ambitious goals. This internship emphasizes building tightly integrated learning-based systems that connect low-level locomotion with high-level planning, translating research into practical, deployable capabilities for real-world robotics.

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

$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.

New!

Santa Ana, California3 days ago

Intern

As an intern, they will actively collaborate with multiple departments, analyze revenue pipelines, track key performance indicators (KPIs), and help optimize our sales processes. Education and Experience: Education: Currently pursuing a bachelor’s degree in finance, Accounting, Economics, Business Analytics, or a related quantitative field.

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.

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.

New!

Los Angeles, CA1 day ago

$79,000–$115,000 Per Year

Responsibilities: Analyze competitive industry dynamics and financial condition of peer companies, evaluate business plans, adjust financial statements and build financial models including discounted cash flow analyses, capital asset pricing model, market multiples methods and replacement cost valuation approaches. Demonstrated quality service mindset, strong technical aptitude, ability to learn and navigate technologies such as artificial intelligence (AI), Alteryx and Power BI, MS Office Applications including Excel, PowerPoint, Word and Outlook and apply emerging technologies to enhance tax processes and insights.

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.

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.

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.

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.

Los Angeles, CA10 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.

New!

Orange, CA1 day 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.

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.

New!

Ontario, CA1 day 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.

Irvine, CA16 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.

Los Angeles, California24 days ago

$26–$29 Per Hour

New!

Los Angeles, California2 days ago

$25–$27 Per Hour

Los Angeles, CA14 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.

Los Angeles, CA30+ days ago

Our global Markets teams help clients manage risk, increase returns, and solve complex financial problems while tackling challenging business issues. If you are ambitious and eager to apply your knowledge to real-world financial scenarios, this internship offers the opportunity to work with sophisticated financial solutions across asset classes in dynamic global markets.

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, CA1 day ago

ASU FIDM invites applications for Summer Session Instructors to teach undergraduate courses in Fashion at our locations in Downtown Phoenix and the ASU California Center in Los Angeles, and through online instruction. Specializations may include design, construction, patternmaking, accessories, textile design, fashion styling, merchandising, or focused segments such as high-end fashion, mass-market fashion, or sustainable fashion.

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.

Diamond Bar, CA30+ days ago

$18–$20

As a Summer 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 Diamond Bar.

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

$26–$47.50 Per Hour

Currently enrolled in an Electrical Engineering (or related) BS, MS or PhD program• Commitment to work onsite for 6 months from June/July to December 2026• Strong desire to learn, grow, and make an impact• Strong career interest in analog circuit design• Willing to share knowledge and collaborate with others• Must have experience with Microsoft Word, Excel, PowerPoint, and Outlook• Experience with Cadence Virtuoso and SPICE is highly preferred• Exposure to lab tools such as Oscilloscope, Function Generator, Multimeter etc.#LI-DJ1The typical pay range for an Engineering intern across the U.S. is currently USD $26.00 - $47.50 per hour and for a Non-Engineering intern across the U.S. is currently USD $22.50 - $42.00 per hour. In this Analog IC Design Summer/Fall Co-Op opportunity at Skyworks, you will learn and participate in developing advanced, state-of-the-art RF front-end modules, working with seasoned engineering professionals and collaborating with subject matter experts within Skyworks.

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.

Irvine, CA30+ days ago

$26–$47.50 Per Hour

This position includes responsibility for both development and sustaining activities: • Explore and Analyze: Dive into ATE test data, generate insightful summary reports, and help uncover trends and conclusions that drive product decisions. 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.

New!

Irvine, CA3 days ago

$26–$47.50 Per Hour

Please note: If you have already graduated and are not currently enrolled in school, you are not eligible for this Co-Op position.#LI-DNIThe typical pay range for an Engineering intern across the U.S. is currently USD $26.00 - $47.50 per hour and for a Non-Engineering intern across the U.S. is currently USD $22.50 - $42.00 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.

New!

Los Angeles, CA2 days ago

Across both campuses, students experience a unified Catholic, Marianist vision of education that fosters faith-filled learning communities, encourages academic rigor, and prepares graduates to lead with integrity, empathy, and hope in a complex and changing world. For more than seven decades, Chaminade has been a community where students are known personally, challenged intellectually, and inspired spiritually to become the men and women God calls them to be, leading lives of purpose and compassion.

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.

Irvine, CA30+ days ago

$26–$47.50 Per Hour

Responsibilities • Explore and Analyze: Dive into ATE test data generate insightful summary reports and help uncover trends and conclusions that drive product decisions • Solve Real Problems: Support customer return analysis by submitting test requests reviewing results and contributing to root cause investigations • Drive Quality: Assist in product qualification and reliability data analysis working closely with IC and module design teams to understand product behavior and performance • Automate and Innovate: Script process steps to streamline data automation and contribute to exciting automation and AI initiatives that shape the future of engineering at Skyworks. Required Experience and Skills Must be currently enrolled in a Bachelors/M.S. program studying Electrical Engineering Must be willing and able to work Jun - December 2026 onsite in our Irvine office The candidate should have strong data analysis skills and should be able to navigate Microsoft office applications such as Word, Excel, and PowerPoint Excellent communication skills both written and verbal.

New!

Los Angeles, CA1 day ago

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.

Los Angeles, CA10 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, CA10 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.

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Summer Jobs in Ontario, CA

Summer Camp Counselor - Hiring Immediately swipejobs LLC Careers

Summer Day Camp Counselor-Intern KE Camps

Summer Day Camp Counselor KE Camps

Summer 2025 Engineering Internship TRL11, Inc.

Summer Internship Mortgage Paramount Residential Mortgage Group

Wonderful Scholar Summer Internship, Accounting The Wonderful Company LLC

Wonderful Scholar Summer Internship, Market Development The Wonderful Company LLC

Macy''s Summer Internship, Store Management - Irvine, CA Macy's Inc

Wonderful Scholar Summer Internship, Agency The Wonderful Company

Construction Finance - Summer Internship Shawmut

Supply Chain Summer Internship Wayfair

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.

Robotics Research Internship-Locomotion & Planning (Summer 2026) Field AI

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

Summer Camp Unit Head JCCs of North America

Sales Finance Operations Analyst - Summer Internship Yokohama Tire Corporation

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

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

Associate, Economic Valuation Services - Valuation | Los Angeles Summer/Fall 2026 KPMG International Cooperative

Engagement & Development Summer Intern Pacvue

Revenue Operations Analyst Summer Intern Pacvue

Summer Intern, Medical Publications & Communications Arrowhead Pharmaceuticals

Summer Day Camp Lifeguard KE Camps

Investment Banking Summer Analyst Career Launch AI

Career Opportunities: Summer Seasonal Team Player (Sales Associate) - Orange (76023) Asics

Rotation Summer Internship Kirkhill Inc.

Summer Seasonal Team Player (Sales Associate) - Ontario Asics

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

Student Architectural Intern | Summer 2026 - Los Angeles Aviation Corgan

*Student Interior Design Intern | Summer 2026 - Los Angeles Workplace Corgan

Marketing Intern - Summer 2026 Boys Lie

2027 Markets Summer Analyst Program JPMorgan Chase & Co

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

Summer Session Instructor in Fashion - ASU FIDM Arizona State University

Summer Swim Instructor Premier Swim Academy - Rancho Cucamonga

Summer Swim Instructor Premier Swim Academy - Diamond Bar

Product Marketing Summer Intern Helium 10

Analog IC Design Summer/Fall Co-Op (June '26 - Dec '26) (Irvine, CA, US) Skyworks Solutions, Inc

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

Product Engineering Summer/Fall Co-Op (Irvine, CA, US) Skyworks Solutions, Inc

AI & Machine Learning Summer/Fall Co-Op (June '26 - Dec '26) (Irvine, CA, US) Skyworks Solutions, Inc

Information Technology Summer Intern Chaminade College Preparatory

SAT Instructor - Summer 2026 Education Unlimited

Product Engineering Summer/Fall Co-Op Skyworks Solutions Inc

Information Technology Summer Intern CHAMINADE COLLEGE PREPARATORY

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

Corporate Development Summer Analyst Career Launch AI

Private Equity Senior Summer Associate Career Launch AI

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