Internships in Mission Viejo, California, United States

Ware Malcomb is a dynamic, forward-thinking commercial real estate design firm providing architecture, interior design, civil engineering, branding, building measurement, structural engineering, and MEP engineering services worldwide. The Human Resources Intern (Fall) supports the day-to-day administrative functions of the Human Resources Department under the direction of the Human Resources Generalist, assisting with data entry, personnel files, onboarding, HR inquiries, and company events.

We are seeking a talented individual to join Marsh People and Investments Health & Benefits Actuarial and Financial Group (AFG) . This role will be based in San Francisco, Los Angeles, Irvine, or Denver .

KPFF Consulting Engineers is seeking a Structural Engineer Summer Intern in Irvine, California, to experience the daily life of a structural engineer through training programs, team activities, and real-world projects. The intern will gain hands-on experience in structural design, assist with calculations and construction documents on active jobs under project leaders, and participate in project meetings and site visits.

Company Description At KPFF Consulting Engineers , we are more than just an engineering design firm . For over 60 years, we have dedicated ourselves to innovative, sustainable engineering that shapes the built environment and tackles complex infrastructure challenges .

Company Description At KPFF Consulting Engineers , we are more than just an engineering design firm . For over 60 years, we have dedicated ourselves to innovative, sustainable engineering that shapes the built environment and tackles complex infrastructure challenges .

As an Audit Intern, you will have the unique opportunity to gain practical experience in the field of audit and assurance. This role offers hands-on exposure to real-world audit engagements, working alongside experienced professionals and contributing to the accuracy and integrity of financial reporting for our diverse clientele.

Baker Tilly, one of the fastest growing CPA advisory firms in the nation, has an exciting opportunity for Credits & Incentives Interns join our growing Specialty Tax practice. As part of our Credits & Incentives team, you will work with clients across a variety of industries to identify and maximize federal and state tax incentives while delivering innovative, data-driven solutions that create value.

This Ph.D. intern pool spans two distinct but connected tracks. The first is hardware-focused: applying ML and AI techniques directly to chip design challenges — EDA automation, design space exploration, predictive modeling for timing and power, and AI-driven approaches to physical design and verification at advanced process nodes.

Marketing team at Darwins building the Tabi consumer app. The Social Media Strategist & Content Creator Intern develops content strategies, builds brand identity, engages audiences, and analyzes campaign performance.

Barnes & Noble Education Campus Bookstore team creates vibrant retail and learning experiences for students. The Student CMO role drives digital marketing, social content, and campus event promotion to boost bookstore engagement.

Commercial Operations Team at Boldyn Networks drives market intelligence and sales support. The intern conducts lead generation, creates market reports across verticals, and supports marketing campaigns while maintaining CRM data.

Tax Internship at Redwitz Inc. provides hands‑on experience assisting with tax preparation and projects for diverse clients, helping interns learn the full tax workflow from document intake to filing. The role involves preparing federal and state returns, organizing financial data in tax software, and supporting senior staff through meetings and training.

As a Summer Intern at Black & Veatch, you will play a meaningful role in addressing some of the world’s most critical infrastructure challenges. This internship offers the opportunity to contribute to diverse, impactful projects that support our clients’ goals while fostering your professional growth and advancing the success of Black & Veatch.

We are seeking a talented individual to join Marsh People and Investments Health & Benefits Actuarial and Financial Group (AFG) . This role will be based in San Francisco, Los Angeles, Irvine, or Denver .

Northwestern Mutual's College Financial Representative Internship Program in Irvine, CA, provides guidance and a framework for building an integrated financial planning practice from the ground up. Interns prospect and network to build a client base, develop business strategies, call on potential clients, prepare financial plans, and engage in weekly coaching and training.

Explore Your Future in Tech Sales & Marketing Are you a college student looking to gain real-world experience in a fast-paced, innovative industry? Western Digital’s Sales & Marketing Internship Program is your chance to work on impactful projects, build professional skills, and explore career paths in the world of data storage and cloud solutions.

Medtronic Engineering Internship program works to develop innovative medical technologies that improve patient outcomes. Interns support research & development, operations, or quality engineering projects, applying design, testing, data analysis, and documentation skills.

We are actively seeking a Process Utilities Engineer Intern to join CRB. Join our firm for an internship journey where you’ll dive into real-world project work, learn from industry leaders and fully immerse yourself in the CRB employee experience. This program is more than just an internship—it's an opportunity to grow, innovate, and make a tangible impact on how we do business.

As our Ph.D. Advanced Packaging & Physical Integration Intern, every day you will work on packaging design and analysis challenges tied directly to production AI accelerator and connectivity platforms. Specifically, you can expect to:

HungryPanda is a London-headquartered food delivery platform connecting overseas Chinese consumers to authentic Chinese food and groceries. The Marketing Intern (Paid) - Mandarin Speaking will assist the marketing team in Irvine, CA with planning and executing brand-awareness campaigns, managing WeChat community engagement, and supporting campus promotions through university partnerships.