Internships in La Habra, California, United States

RTX is seeking a Systems Engineering Intern to join the Multidisciplinary Integrated Systems Department in Fullerton, CA. The role focuses on modeling and simulation for space-based systems and satellites, contributing engineering practices to solve complex computational problems. Interns will identify and update circuit card and subassembly designs, and may travel to suppliers.

Volunteer/Internship – Law Student Externship at the Superior Court of Orange County offers law students an unpaid, hands‑on experience in legal research and memorandum drafting. Externs work behind the scenes, supporting judges and clerks with civil, criminal, family, and juvenile matters.

Fellowship of Christian Athletes (FCA) interns develop student athletes’ calling to ministry while engaging in a 10‑week immersive discipleship program. The role involves spiritual leadership, prayer, Bible study, and coaching support for athletes and volunteers in Southern California.

RTX invites students to join its Connected Aviation group as a Software Engineer Intern for the summer of 2026. Based in Fullerton, California, the role is on‑site and offers hands‑on experience in developing the Wide‑Area Augmentation System (WAAS) for the FAA. Interns will design, code, test, and document new or modified software, collaborating with developers, testers, release engineers, and cross‑disciplinary teams such as systems and hardware.

The District Manager in Training leads daily operations of a fast‑food restaurant, driving a 5% sales increase and sustaining growth for two months before expanding to additional locations. Responsibilities include financial performance, team development, operational excellence, and local marketing.

Uline is seeking a motivated college student for a paid Outside Sales Internship during Summer 2026. The role offers hands‑on experience in face‑to‑face selling, weekly sales training, and mentorship from seasoned sales professionals.

Seneca Family of Agencies offers immersive fieldwork placements for MSW, MFT, and PCC interns across Southern California. The program follows a standard academic calendar, beginning in the fall and concluding in spring/summer, with a minimum commitment of 16 hours weekly—some sites require 20‑24 hours.

The Veterinary Emergency Group (VEG) offers an unpaid externship for veterinary technology students to gain hands‑on experience in emergency medicine. Participants shadow credentialed technicians, assist with triage, diagnostics, anesthesia, and inpatient care, and receive mentorship.

Rosendin Electric, a leading electrical contractor, offers a Summer Internship Program for Civil Engineering students. The 10‑to‑12 week paid internship provides hands‑on experience in Construction Project Management, Engineering, Procurement, Estimating, Safety, and Corporate roles.

Field Chemist II on the DOW SkillBridge program at Republic Services, a partner of the Department of Defense. The role facilitates Lab Pack Program, Household Hazardous Waste (HHW), and other field activities by providing on‑site services for customers, including characterization, packaging, handling, and transportation of wastes.

Product Analyst Intern at Maersk Logistics & Services USA Inc. supports data‑driven decision making by building holistic data views and delivering insights through dashboards and reports. Works closely with leadership and stakeholders across the Maersk Contract Logistics product in North America to understand business processes and develop analytics solutions.

Career & Technical Education Office offers hands‑on experience for students interested in healthcare careers. The Student Intern assists teachers with lesson planning, classroom setup, and student support while gaining exposure to health‑care industry standards.

CTE - Student Interns at A.J. Moore Academy works within the Career & Technical Education Office to support hands‑on learning projects for students. The intern assists faculty with curriculum delivery, prepares instructional materials, and helps coordinate classroom activities.

An internship and co‑op opportunity at Marathon Petroleum Corp. (MPC) offers high‑performing college students in Civil, Electrical, or Mechanical Engineering hands‑on experience in the Logistics & Storage organization.

Industrial Engineering Intern at UPS will conduct operational observations, analyze data, develop reports, and support process improvement projects to reduce costs. Responsibilities include identifying business impacts, recommending and implementing process improvements with analysts and sponsors, and preparing presentations and reports.

An internship/co‑op opportunity with Marathon Petroleum’s Logistics & Storage organization offers hands‑on experience in engineering design, project management, cost estimating, scheduling, bid evaluation, construction supervision, safety leadership, and operations coordination. Interns rotate across L&S components—Support Services, Terminals, MPL, and Marine—to gain exposure to pipeline, terminal, and marine operations.

This internship offers hands‑on experience in industrial engineering at UPS. The role involves field observations, data analysis, and report creation to support process‑improvement projects. Interns will research data, develop queries, and prepare presentations that help reduce costs and enhance operational efficiency.

Event Operations Intern at OC Sports & Entertainment, LLC. The role supports the Honda Center’s live entertainment team, coordinating event orders, interdepartmental communication, and day‑of‑show logistics to deliver safe, memorable experiences. Interns work on‑site in Anaheim, assisting with planning, promotion support, and operational documentation while gaining exposure to venue management systems and budgeting.

Northwestern Mutual College Financial Representatives internship program builds future financial planners through hands‑on mentorship and proprietary planning tools. Interns prospect and network to grow client bases, develop business strategies, and prepare financial plans while engaging weekly coaching and training sessions.

Target is offering a paid 40 hr/week internship for Store Executive Intern (Store Leadership Intern) in Pomona, CA. The role provides hands‑on training to develop leadership skills for the Assistant Store Manager role. Interns will work closely with the Executive Team Lead and other managers, leading daily operations, guest service, merchandising, and team management.