52 Results for

Summer Business Jobs in Ontario, CA

Jobs

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.

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, 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.

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.

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.

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.

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.

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!

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

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!

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.

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, 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, California24 days ago

$26–$29 Per Hour

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.

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

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

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.

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.

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, 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.

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!

Jurupa Valley, CA2 days ago

Full-time

In the past few years, Woodcraft has expanded its menu of services beyond traditional afterschool programs and summer camps to include early learning, environmental and social justice, college access, and inclusion services for youth with intellectual and developmental disabilities. Travel is necessary to various regions where Woodcraft Rangers programs are implemented, including San Fernando Valley, South Los Angeles, West Los Angeles, San Gabriel Valley, Southeast LA, and Downtown areas, to support or deliver in-person training.

Irvine, California15 days ago

Misconduct Disclosure Requirement: As a condition of employment, the final candidate who accepts a conditional offer of employment will be required to disclose if they have been subject to any final administrative or judicial decisions within the last seven years determining that they committed any misconduct; received notice of any allegations or are currently the subject of any administrative or disciplinary proceedings involving misconduct; have left a position after receiving notice of allegations or while under investigation in an administrative or disciplinary proceeding involving misconduct; or have filed an appeal of a finding of misconduct with a previous employer. It’s located in one of the world’s safest and most economically vibrant communities and is Orange County’s second-largest employer, contributing $7 billion annually to the local economy and $8 billion statewide.

Irvine, California26 days ago

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!

Santa Ana, CA1 day 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.

Newport Beach, CA30+ days ago

Oversee key business functions (under mentorship): Leverage team to track revenue, patient data, and leads; respond to inquiries within 24 hours; scrutinize expenses; maintain systems with IT support; audit systems and processes, and ensure compliance with regulations. We are a premier holistic PT clinic in beautiful Newport Beach, specializing in orthopedic manual therapy, chronic pain relief, sports recovery, and personalized wellness (including MELT Method, Pilates, and free community workshops).

New!

Los Angeles, CA1 day ago

$110,000–$130,000 Per Year

Manage written proposal submissions, including pulling together existing content, writing content themselves, and editing what others have written -- ranging from a light touch to catch typos to more significant massaging of content that's come from various people into a coherent narrative and voice . The ideal candidate may not have worked on a formal business development team before, but does work at an agency or consulting firm, knows there's people who pitch the business the firm works on, and believes being one of those people could be the next chapter in their career.

Los Angeles, CA30+ days ago

$85,000–$132,812.50 Per Year

PACE’s service include Business Development; Workforce Development; Early Childhood Education (Head Start); Financial Education and Asset Building; Housing and Rehabilitation Services; Weatherization and Energy-conservation programs; and Affordable Housing Development. PACE is recognized as a leader in addressing problems of poverty and economic inequity in ethnic minority communities and has a reputation for being responsive to community needs and known to create innovative solutions to the myriad of challenges faced by our clients.

Fountain Valley, California27 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.

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, California24 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.

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.

pico rivera, CA30+ days ago

At Million Dollar Baby Co., our team members are our #1 priority, and we partner with exceptional partners and retailers around the world who share our core values: Treat Your Team Like Family \u2014 lead with respect, gratitude, empathy, and kindness. Over the years, our commitment to people, innovation, and a positive workplace culture has earned us five consecutive "Best Place to Work" awards, one of the best workplaces by "Built in LA", a 4.6 rating on Glassdoor, and 13 years on the Inc.

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.

San Bernardino, CA30+ days ago

$29.87–$36.66 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.

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.

San Bernardino, CA30 days ago

$29.87–$36.66 Per Hour

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.

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.

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.

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Summer Business Jobs in Ontario, CA

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

Sales Finance Operations Analyst - Summer Internship Yokohama Tire Corporation

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

Engagement & Development Summer Intern Pacvue

Summer Day Camp Counselor-Intern KE Camps

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

Summer Camp Counselor - Hiring Immediately swipejobs LLC Careers

Summer Day Camp Counselor KE Camps

Rotation Summer Internship Kirkhill Inc.

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

Summer Seasonal Team Player (Sales Associate) - Ontario Asics

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

Student Architectural Intern | Summer 2026 - Los Angeles Aviation Corgan

Corporate Development Summer Analyst Career Launch AI

Product Marketing Summer Intern Helium 10

Supply Chain & Demand Management 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

Private Equity Senior Summer Associate Career Launch AI

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

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

Summer 2025 Engineering Internship TRL11, Inc.

Quality Assurance Specialist - Summer Day Program Woodcraft Rangers

Temporary Summer Senior Custodian University of California, Irvine

Temporary Summer Senior Building Maintenance Worker University of California, Irvine

Summer Day Camp Lifeguard KE Camps

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

Business Operations Management Internship Anderson Sport and Wellness

Director, Business Development WONGDOODY

Small Business Contracting Manager PACE

Therapeutic Camp Counselor Quest Therapeutic Camps of Southern California

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

2026 Internship Program Omaha Productions

Internship Million Dollar Baby Co.

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

Fully Credentialed School Bus CDL Drivers Summit School Services

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

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

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

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