Internships in Fullerton, California, United States

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.

Chartwells Higher Ed at California State University - Fullerton seeks a Marketing Intern to support the dining program's promotional efforts. The role involves market research, social media management, event planning, and creating marketing materials under the guidance of the Marketing Manager.

Northwestern Mutual's College Financial Representative Internship Program in Anaheim, CA, on-site, guides full-time students to build an integrated financial planning practice from the ground up. You will prospect and network to build a client base, develop and execute business strategies, call on potential clients to set meetings, prepare financial plans and recommendations, and engage in weekly coaching and training.

Uline Sales Team offers a high‑energy, fast‑paced environment where interns help drive field sales. As an Outside Sales Intern you will deliver customer service, conduct on‑site client visits, and participate in weekly sales meetings to build presentation and product knowledge.

Northwestern Mutual College Financial Representative Internship Program builds future financial planners by providing guidance, networking, and a framework to develop an integrated financial planning practice. Interns prospect clients, execute business strategies, prepare plans, and engage with proprietary planning software while receiving weekly coaching and training.

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.

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.

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.

STRUCTURAL, a leading concrete repair contractor, offers a Construction Project Engineer Internship for Summer 2025 in Garden Grove, CA. The role involves project management support, estimating, budgeting, cost management, scheduling, production tracking, client relations, safety, quality control, and business development. Candidates should have a Bachelor's degree or be pursuing one in Construction Management, Civil Engineering, or related field, strong communication, documentation, organizatio

Strategic Development team at CalOptima works to improve community health through policy initiatives and program pilots. The intern supports project coordination, research, and analysis while collaborating with leadership and external partners.

Murray Company, a top 20 mechanical contractor, offers a Project Engineer Intern position within its Operations group. Reporting to project managers, you will gain hands-on project management experience supporting mechanical projects (plumbing, HVAC, process piping, industrial) across pre-construction, fabrication, and field installation functions.

The ECOS Team seeks an HR Intern to support Human Resources by developing employee training and learning materials within a manufacturing environment. The role involves creating engaging content such as videos, scripts, and presentations while collaborating with HR and operations teams.

DRS Space Systems' Electro Optical Infrared Systems (EOIS) line of business in Cypress, CA develops advanced space mission payloads using electro-optical and infrared space sensors, instruments, and software for domestic and international allied customers. As an Electrical (or Computer) Engineering Intern/Co-op, you will support the design, development, testing, and troubleshooting of electronic and electromechanical systems through hands-on tasks such as building and modifying components, condu

Murray Company's Engineering group seeks a Design Engineer Intern for Summer 2027 to design complex piping and mechanical systems. You will work alongside senior engineers on HVAC, plumbing, and piping designs, creating CAD drawings, performing load calculations, and ensuring compliance with industry standards.

Communications Department at OCERS seeks an unpaid Communications Intern to support public information strategies, create social media content, and assist with event promotion. The intern will work on content calendars, photo/video capture, and drafting press releases while collaborating with the Director of Communications.

Coast Community College District is offering unpaid student internship positions to support campus operations and student services. These internships provide hands‑on experience in a higher‑education environment, allowing students to apply classroom knowledge to real‑world tasks.

Internship focused on climate adaptation planning within Orange County’s Emergency Management Division, offering research, documentation, and operational support experience.

Unpaid internship for law students to gain experience in county legal matters, including research, drafting, and court observation, with flexible hybrid schedule.

An unpaid internship with the County of Orange offers students and recent graduates a hands‑on experience in public relations, social media, and media relations. Interns support daily communications activities across multiple county agencies, drafting press releases, managing social media accounts, and coordinating community outreach.

Office of the District Attorney, Orange County, provides legal support to the State of California's criminal and civil proceedings. Interns assist trial attorneys and investigators by organizing discovery, conducting research, and gathering data to support investigations.