Internships in Tustin, California, United States

Environmental Planning Intern - Summer 2026 at HNTB. The role supports the Environmental Planning group in Santa Ana, CA (Irvine).

We are seeking motivated students for a 10‑11 week R&D Engineering Internship at Medtronic. Interns will work full‑time (40 hrs/week) across 15 U.S. locations, including Minneapolis, Tempe, Santa Rosa, Lafayette, Boulder, Irvine, North Haven, Memphis, Newton, Santa Ana, Dexter, Fort Worth, Santa Clara, Jacksonville, and Boston.

Medtronic is seeking engineering interns for Summer 2026, specifically candidates attending the 2025 SHPE National Convention in Philadelphia. Interns will work full‑time (40 hours per week) from June to August, with a minimum of four onsite days per week.

Patient Services – Summer Student at Cleveland Clinic Hudson Express. The role supports patient-first care by handling administrative, clerical, and operational tasks, including equipment maintenance and database updates.

Join GHD Group as a Design Intern in Anchorage, AK, contributing to architectural and engineering projects across multiple locations. Work in a hybrid environment, collaborating on design, drafting, feasibility studies, building surveys, BIM, and construction advice.

Wistron NeWeb’s Software Project Internship supports the Release Management team by executing software release activities, maintaining release documentation, and coordinating security‑related compliance reports. The role tracks project status, manages documentation, and collaborates across teams to ensure operational efficiency.

Internship in 5G automotive communication module security research. Design and implement platform security features, secure boot, TrustZone services, MAC, CVE analysis, threat modeling, and participate in automotive security certifications.

Engineering team at Regal Technology Partners, focused on high-tech manufacturing operations. The Manufacturing Engineer Intern supports lean initiatives, conducts workflow analysis, and assists with SOPs and troubleshooting to improve efficiency.

Sales Finance Operations Analyst Intern at Yokohama Tire focuses on data-driven analysis across finance, sales, and operations. The role involves weekly sales performance reporting, commission administration, process optimization, and ad-hoc market research to support strategic growth.

Project Management Intern at Nikkiso ACD in Santa Ana, CA, supporting the Project Management Department in planning, scheduling, and coordinating projects. The role involves creating project schedules, budgets, and status reports while ensuring documentation and communication standards are met.

Community Relations team at CalOptima works to build healthier communities through stakeholder engagement and health initiatives. The Intern supports department projects, assists with community engagement, event coordination, and program development while collaborating with managers and external partners.

HR Talent team at CalOptima supports the organization’s recruitment and employee services. The intern assists with HR department tasks, contributes to projects, and helps meet deadlines while gaining experience in HR operations.

SA Recycling internship supports daily office operations by handling recordkeeping, scheduling, and communications. The role works independently on a PC using MS Excel, Word, and Outlook while maintaining calendars and assisting with waste disposal and housekeeping tasks.

PULLMAN, a structural group, offers a Summer 2026 Construction Project Engineer Internship in Los Angeles. Interns join the PECD program, gaining hands‑on experience in scheduling, estimating, budgeting, safety, quality, client relations, and field resource management across commercial and public projects.

Assist with daily administrative tasks, including recordkeeping, scheduling, and communication. Use MS Office tools and maintain office organization.

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.

OC Animal Care Foster Program Management Intern offers students and recent graduates a hands‑on opportunity to support the county’s animal welfare mission. In this unpaid, in‑person role, interns collaborate with foster caretakers, shelter clinic staff, and program administrators to ensure the health and safety of companion animals.

The County of Orange seeks a motivated OC Animal Care Marketing Intern to support outreach and public relations efforts. In this unpaid, in‑person role, the intern will develop engaging social‑media content, design promotional materials, and capture photos and videos of shelter animals to enhance online profiles and marketing campaigns.

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.

Seeking motivated students or recent graduates to support the Health Disaster Preparedness team at the Orange County Health Care Agency. The unpaid internship offers hands‑on experience in emergency management, public health, and grant administration.